Finding the Fourth Proportional to 2,572,359.48, 3,858,690.69 and 866,360.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572,359.48 : 3,858,690.69 = 866,360.16 : x
2. Step 2: Convert to fraction form
   2,572,359.48/3,858,690.69 = 866,360.16/x
3. Step 3: Cross multiply
   2,572,359.48x = 3,858,690.69 × 866,360.16
4. Step 4: Simplify right side
   2,572,359.48x = 3,343,015,883,578.91
5. Step 5: Solve for x
   x = 3,343,015,883,578.91/2,572,359.48
6. Step 6: Final answer
   x = 1,299,591.25