Finding the Fourth Proportional to 1,177.55, 1,763.59 and 656.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,177.55 : 1,763.59 = 656.72 : x
2. Step 2: Convert to fraction form
   1,177.55/1,763.59 = 656.72/x
3. Step 3: Cross multiply
   1,177.55x = 1,763.59 × 656.72
4. Step 4: Simplify right side
   1,177.55x = 1,158,184.82
5. Step 5: Solve for x
   x = 1,158,184.82/1,177.55
6. Step 6: Final answer
   x = 983.55