Finding the Fourth Proportional to 1,508.59, 2,082.06 and 879.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,508.59 : 2,082.06 = 879.15 : x
2. Step 2: Convert to fraction form
   1,508.59/2,082.06 = 879.15/x
3. Step 3: Cross multiply
   1,508.59x = 2,082.06 × 879.15
4. Step 4: Simplify right side
   1,508.59x = 1,830,438.65
5. Step 5: Solve for x
   x = 1,830,438.65/1,508.59
6. Step 6: Final answer
   x = 1,213.35