Finding the Fourth Proportional to 1,342.05, 1,851.57 and 782.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.05 : 1,851.57 = 782.34 : x
2. Step 2: Convert to fraction form
   1,342.05/1,851.57 = 782.34/x
3. Step 3: Cross multiply
   1,342.05x = 1,851.57 × 782.34
4. Step 4: Simplify right side
   1,342.05x = 1,448,557.27
5. Step 5: Solve for x
   x = 1,448,557.27/1,342.05
6. Step 6: Final answer
   x = 1,079.36