Finding the Fourth Proportional to 1,737.59, 2,398.10 and 991.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,737.59 : 2,398.10 = 991.82 : x
2. Step 2: Convert to fraction form
   1,737.59/2,398.10 = 991.82/x
3. Step 3: Cross multiply
   1,737.59x = 2,398.10 × 991.82
4. Step 4: Simplify right side
   1,737.59x = 2,378,466.59
5. Step 5: Solve for x
   x = 2,378,466.59/1,737.59
6. Step 6: Final answer
   x = 1,368.83