Finding the Fourth Proportional to 1,341.53, 1,851.80 and 782.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.53 : 1,851.80 = 782.17 : x
2. Step 2: Convert to fraction form
   1,341.53/1,851.80 = 782.17/x
3. Step 3: Cross multiply
   1,341.53x = 1,851.80 × 782.17
4. Step 4: Simplify right side
   1,341.53x = 1,448,419.73
5. Step 5: Solve for x
   x = 1,448,419.73/1,341.53
6. Step 6: Final answer
   x = 1,079.68