Finding the Fourth Proportional to 1,337.50, 1,845.11 and 839.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.50 : 1,845.11 = 839.89 : x
2. Step 2: Convert to fraction form
   1,337.50/1,845.11 = 839.89/x
3. Step 3: Cross multiply
   1,337.50x = 1,845.11 × 839.89
4. Step 4: Simplify right side
   1,337.50x = 1,549,689.44
5. Step 5: Solve for x
   x = 1,549,689.44/1,337.50
6. Step 6: Final answer
   x = 1,158.65