Finding the Fourth Proportional to 1,737.47, 2,397.72 and 991.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,737.47 : 2,397.72 = 991.67 : x
2. Step 2: Convert to fraction form
   1,737.47/2,397.72 = 991.67/x
3. Step 3: Cross multiply
   1,737.47x = 2,397.72 × 991.67
4. Step 4: Simplify right side
   1,737.47x = 2,377,738.72
5. Step 5: Solve for x
   x = 2,377,738.72/1,737.47
6. Step 6: Final answer
   x = 1,368.50