Finding the Fourth Proportional to 1,341.60, 1,851.62 and 782.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.60 : 1,851.62 = 782.25 : x
2. Step 2: Convert to fraction form
   1,341.60/1,851.62 = 782.25/x
3. Step 3: Cross multiply
   1,341.60x = 1,851.62 × 782.25
4. Step 4: Simplify right side
   1,341.60x = 1,448,425.83
5. Step 5: Solve for x
   x = 1,448,425.83/1,341.60
6. Step 6: Final answer
   x = 1,079.63