Finding the Fourth Proportional to 1,061.06, 1,462.70 and 687.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.06 : 1,462.70 = 687.92 : x
2. Step 2: Convert to fraction form
   1,061.06/1,462.70 = 687.92/x
3. Step 3: Cross multiply
   1,061.06x = 1,462.70 × 687.92
4. Step 4: Simplify right side
   1,061.06x = 1,006,220.58
5. Step 5: Solve for x
   x = 1,006,220.58/1,061.06
6. Step 6: Final answer
   x = 948.32