Finding the Fourth Proportional to 1,341.58, 1,850.77 and 781.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.58 : 1,850.77 = 781.72 : x
2. Step 2: Convert to fraction form
   1,341.58/1,850.77 = 781.72/x
3. Step 3: Cross multiply
   1,341.58x = 1,850.77 × 781.72
4. Step 4: Simplify right side
   1,341.58x = 1,446,780.02
5. Step 5: Solve for x
   x = 1,446,780.02/1,341.58
6. Step 6: Final answer
   x = 1,078.42