Finding the Fourth Proportional to 1,339.92, 1,849.10 and 815.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.92 : 1,849.10 = 815.94 : x
2. Step 2: Convert to fraction form
   1,339.92/1,849.10 = 815.94/x
3. Step 3: Cross multiply
   1,339.92x = 1,849.10 × 815.94
4. Step 4: Simplify right side
   1,339.92x = 1,508,750.57
5. Step 5: Solve for x
   x = 1,508,750.57/1,339.92
6. Step 6: Final answer
   x = 1,126.00