Finding the Fourth Proportional to 1,341.51, 1,851.69 and 782.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.51 : 1,851.69 = 782.12 : x
2. Step 2: Convert to fraction form
   1,341.51/1,851.69 = 782.12/x
3. Step 3: Cross multiply
   1,341.51x = 1,851.69 × 782.12
4. Step 4: Simplify right side
   1,341.51x = 1,448,234.52
5. Step 5: Solve for x
   x = 1,448,234.52/1,341.51
6. Step 6: Final answer
   x = 1,079.56