Finding the Fourth Proportional to 2,426.81, 3,640.82 and 783.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.81 : 3,640.82 = 783.32 : x
2. Step 2: Convert to fraction form
   2,426.81/3,640.82 = 783.32/x
3. Step 3: Cross multiply
   2,426.81x = 3,640.82 × 783.32
4. Step 4: Simplify right side
   2,426.81x = 2,851,927.12
5. Step 5: Solve for x
   x = 2,851,927.12/2,426.81
6. Step 6: Final answer
   x = 1,175.18