Finding the Fourth Proportional to 1,171,061.74, 1,616,077.74 and 687,632.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171,061.74 : 1,616,077.74 = 687,632.68 : x
2. Step 2: Convert to fraction form
   1,171,061.74/1,616,077.74 = 687,632.68/x
3. Step 3: Cross multiply
   1,171,061.74x = 1,616,077.74 × 687,632.68
4. Step 4: Simplify right side
   1,171,061.74x = 1,111,267,867,444.54
5. Step 5: Solve for x
   x = 1,111,267,867,444.54/1,171,061.74
6. Step 6: Final answer
   x = 948,940.46