Finding the Fourth Proportional to 1,200.55, 1,656.98 and 758.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.55 : 1,656.98 = 758.61 : x
2. Step 2: Convert to fraction form
   1,200.55/1,656.98 = 758.61/x
3. Step 3: Cross multiply
   1,200.55x = 1,656.98 × 758.61
4. Step 4: Simplify right side
   1,200.55x = 1,257,001.60
5. Step 5: Solve for x
   x = 1,257,001.60/1,200.55
6. Step 6: Final answer
   x = 1,047.02