Finding the Fourth Proportional to 1,502.91, 2,073.93 and 839.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,502.91 : 2,073.93 = 839.63 : x
2. Step 2: Convert to fraction form
   1,502.91/2,073.93 = 839.63/x
3. Step 3: Cross multiply
   1,502.91x = 2,073.93 × 839.63
4. Step 4: Simplify right side
   1,502.91x = 1,741,323.48
5. Step 5: Solve for x
   x = 1,741,323.48/1,502.91
6. Step 6: Final answer
   x = 1,158.63