Finding the Fourth Proportional to 2,377.55, 3,566.53 and 915.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,377.55 : 3,566.53 = 915.91 : x
2. Step 2: Convert to fraction form
   2,377.55/3,566.53 = 915.91/x
3. Step 3: Cross multiply
   2,377.55x = 3,566.53 × 915.91
4. Step 4: Simplify right side
   2,377.55x = 3,266,612.72
5. Step 5: Solve for x
   x = 3,266,612.72/2,377.55
6. Step 6: Final answer
   x = 1,373.94