Finding the Fourth Proportional to 1,117,513.76, 1,542,465.56 and 688,153.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,117,513.76 : 1,542,465.56 = 688,153.73 : x
2. Step 2: Convert to fraction form
   1,117,513.76/1,542,465.56 = 688,153.73/x
3. Step 3: Cross multiply
   1,117,513.76x = 1,542,465.56 × 688,153.73
4. Step 4: Simplify right side
   1,117,513.76x = 1,061,453,422,518.60
5. Step 5: Solve for x
   x = 1,061,453,422,518.60/1,117,513.76
6. Step 6: Final answer
   x = 949,834.77