Finding the Fourth Proportional to 1,737.89, 2,397.98 and 991.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,737.89 : 2,397.98 = 991.73 : x
2. Step 2: Convert to fraction form
   1,737.89/2,397.98 = 991.73/x
3. Step 3: Cross multiply
   1,737.89x = 2,397.98 × 991.73
4. Step 4: Simplify right side
   1,737.89x = 2,378,157.18
5. Step 5: Solve for x
   x = 2,378,157.18/1,737.89
6. Step 6: Final answer
   x = 1,368.42