Finding the Fourth Proportional to 1,341.22, 1,850.89 and 781.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.22 : 1,850.89 = 781.74 : x
2. Step 2: Convert to fraction form
   1,341.22/1,850.89 = 781.74/x
3. Step 3: Cross multiply
   1,341.22x = 1,850.89 × 781.74
4. Step 4: Simplify right side
   1,341.22x = 1,446,913.03
5. Step 5: Solve for x
   x = 1,446,913.03/1,341.22
6. Step 6: Final answer
   x = 1,078.81