Finding the Fourth Proportional to 1,737.55, 2,397.82 and 991.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,737.55 : 2,397.82 = 991.53 : x
2. Step 2: Convert to fraction form
   1,737.55/2,397.82 = 991.53/x
3. Step 3: Cross multiply
   1,737.55x = 2,397.82 × 991.53
4. Step 4: Simplify right side
   1,737.55x = 2,377,502.71
5. Step 5: Solve for x
   x = 2,377,502.71/1,737.55
6. Step 6: Final answer
   x = 1,368.31