Finding the Fourth Proportional to 1,371.38, 1,892.52 and 782.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.38 : 1,892.52 = 782.24 : x
2. Step 2: Convert to fraction form
   1,371.38/1,892.52 = 782.24/x
3. Step 3: Cross multiply
   1,371.38x = 1,892.52 × 782.24
4. Step 4: Simplify right side
   1,371.38x = 1,480,395.38
5. Step 5: Solve for x
   x = 1,480,395.38/1,371.38
6. Step 6: Final answer
   x = 1,079.50