Finding the Fourth Proportional to 1,341.77, 1,851.86 and 782.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.77 : 1,851.86 = 782.39 : x
2. Step 2: Convert to fraction form
   1,341.77/1,851.86 = 782.39/x
3. Step 3: Cross multiply
   1,341.77x = 1,851.86 × 782.39
4. Step 4: Simplify right side
   1,341.77x = 1,448,883.33
5. Step 5: Solve for x
   x = 1,448,883.33/1,341.77
6. Step 6: Final answer
   x = 1,079.83