Finding the Fourth Proportional to 1,039.82, 1,434.78 and 597.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.82 : 1,434.78 = 597.78 : x
2. Step 2: Convert to fraction form
   1,039.82/1,434.78 = 597.78/x
3. Step 3: Cross multiply
   1,039.82x = 1,434.78 × 597.78
4. Step 4: Simplify right side
   1,039.82x = 857,682.79
5. Step 5: Solve for x
   x = 857,682.79/1,039.82
6. Step 6: Final answer
   x = 824.84