Finding the Fourth Proportional to 1,258,456,468.90, 1,887,760,369.30 and 385,065,404

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258,456,468.90 : 1,887,760,369.30 = 385,065,404 : x
2. Step 2: Convert to fraction form
   1,258,456,468.90/1,887,760,369.30 = 385,065,404/x
3. Step 3: Cross multiply
   1,258,456,468.90x = 1,887,760,369.30 × 385,065,404
4. Step 4: Simplify right side
   1,258,456,468.90x = 726,911,209,259,693,696
5. Step 5: Solve for x
   x = 726,911,209,259,693,696/1,258,456,468.90
6. Step 6: Final answer
   x = 577,621,258.44