Finding the Fourth Proportional to 1,155.61, 1,734.96 and 983.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.61 : 1,734.96 = 983.39 : x
2. Step 2: Convert to fraction form
   1,155.61/1,734.96 = 983.39/x
3. Step 3: Cross multiply
   1,155.61x = 1,734.96 × 983.39
4. Step 4: Simplify right side
   1,155.61x = 1,706,134.56
5. Step 5: Solve for x
   x = 1,706,134.56/1,155.61
6. Step 6: Final answer
   x = 1,476.39