Finding the Fourth Proportional to 2,084.10, 2,876.04 and 1,139.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.10 : 2,876.04 = 1,139.90 : x
2. Step 2: Convert to fraction form
   2,084.10/2,876.04 = 1,139.90/x
3. Step 3: Cross multiply
   2,084.10x = 2,876.04 × 1,139.90
4. Step 4: Simplify right side
   2,084.10x = 3,278,398.00
5. Step 5: Solve for x
   x = 3,278,398.00/2,084.10
6. Step 6: Final answer
   x = 1,573.05