Finding the Fourth Proportional to 1,502.46, 2,073.20 and 839.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,502.46 : 2,073.20 = 839.21 : x
2. Step 2: Convert to fraction form
   1,502.46/2,073.20 = 839.21/x
3. Step 3: Cross multiply
   1,502.46x = 2,073.20 × 839.21
4. Step 4: Simplify right side
   1,502.46x = 1,739,835.61
5. Step 5: Solve for x
   x = 1,739,835.61/1,502.46
6. Step 6: Final answer
   x = 1,157.99