Finding the Fourth Proportional to 1,152,533.76, 1,590,704.73 and 687,417.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,533.76 : 1,590,704.73 = 687,417.42 : x
2. Step 2: Convert to fraction form
   1,152,533.76/1,590,704.73 = 687,417.42/x
3. Step 3: Cross multiply
   1,152,533.76x = 1,590,704.73 × 687,417.42
4. Step 4: Simplify right side
   1,152,533.76x = 1,093,478,141,478.40
5. Step 5: Solve for x
   x = 1,093,478,141,478.40/1,152,533.76
6. Step 6: Final answer
   x = 948,760.18