Finding the Fourth Proportional to 1,502.59, 2,073.58 and 839.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,502.59 : 2,073.58 = 839.47 : x
2. Step 2: Convert to fraction form
   1,502.59/2,073.58 = 839.47/x
3. Step 3: Cross multiply
   1,502.59x = 2,073.58 × 839.47
4. Step 4: Simplify right side
   1,502.59x = 1,740,697.83
5. Step 5: Solve for x
   x = 1,740,697.83/1,502.59
6. Step 6: Final answer
   x = 1,158.46