Finding the Fourth Proportional to 1,882.12, 2,815.98 and 1,139

Step by Step Solution

1. Step 1: Write the proportion equation
   1,882.12 : 2,815.98 = 1,139 : x
2. Step 2: Convert to fraction form
   1,882.12/2,815.98 = 1,139/x
3. Step 3: Cross multiply
   1,882.12x = 2,815.98 × 1,139
4. Step 4: Simplify right side
   1,882.12x = 3,207,401.22
5. Step 5: Solve for x
   x = 3,207,401.22/1,882.12
6. Step 6: Final answer
   x = 1,704.14