Finding the Fourth Proportional to 1,111.32, 1,666.98 and 462.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.32 : 1,666.98 = 462.78 : x
2. Step 2: Convert to fraction form
   1,111.32/1,666.98 = 462.78/x
3. Step 3: Cross multiply
   1,111.32x = 1,666.98 × 462.78
4. Step 4: Simplify right side
   1,111.32x = 771,445.00
5. Step 5: Solve for x
   x = 771,445.00/1,111.32
6. Step 6: Final answer
   x = 694.17