Finding the Fourth Proportional to 1,502.72, 2,073.73 and 839.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,502.72 : 2,073.73 = 839.58 : x
2. Step 2: Convert to fraction form
   1,502.72/2,073.73 = 839.58/x
3. Step 3: Cross multiply
   1,502.72x = 2,073.73 × 839.58
4. Step 4: Simplify right side
   1,502.72x = 1,741,051.86
5. Step 5: Solve for x
   x = 1,741,051.86/1,502.72
6. Step 6: Final answer
   x = 1,158.60