Finding the Fourth Proportional to 1,341.61, 1,851.59 and 782.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.61 : 1,851.59 = 782.10 : x
2. Step 2: Convert to fraction form
   1,341.61/1,851.59 = 782.10/x
3. Step 3: Cross multiply
   1,341.61x = 1,851.59 × 782.10
4. Step 4: Simplify right side
   1,341.61x = 1,448,128.54
5. Step 5: Solve for x
   x = 1,448,128.54/1,341.61
6. Step 6: Final answer
   x = 1,079.40