Finding the Fourth Proportional to 1,371.03, 1,892.16 and 781.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.03 : 1,892.16 = 781.62 : x
2. Step 2: Convert to fraction form
   1,371.03/1,892.16 = 781.62/x
3. Step 3: Cross multiply
   1,371.03x = 1,892.16 × 781.62
4. Step 4: Simplify right side
   1,371.03x = 1,478,950.10
5. Step 5: Solve for x
   x = 1,478,950.10/1,371.03
6. Step 6: Final answer
   x = 1,078.71