Finding the Fourth Proportional to 1,385,061.36, 1,911,386.52 and 781,505.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385,061.36 : 1,911,386.52 = 781,505.52 : x
2. Step 2: Convert to fraction form
   1,385,061.36/1,911,386.52 = 781,505.52/x
3. Step 3: Cross multiply
   1,385,061.36x = 1,911,386.52 × 781,505.52
4. Step 4: Simplify right side
   1,385,061.36x = 1,493,759,116,233.59
5. Step 5: Solve for x
   x = 1,493,759,116,233.59/1,385,061.36
6. Step 6: Final answer
   x = 1,078,478.66