Finding the Fourth Proportional to 1,060.56, 1,462.20 and 686.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.56 : 1,462.20 = 686.88 : x
2. Step 2: Convert to fraction form
   1,060.56/1,462.20 = 686.88/x
3. Step 3: Cross multiply
   1,060.56x = 1,462.20 × 686.88
4. Step 4: Simplify right side
   1,060.56x = 1,004,355.94
5. Step 5: Solve for x
   x = 1,004,355.94/1,060.56
6. Step 6: Final answer
   x = 947.01