Finding the Fourth Proportional to 1,026.68, 1,417.34 and 712.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,026.68 : 1,417.34 = 712.49 : x
2. Step 2: Convert to fraction form
   1,026.68/1,417.34 = 712.49/x
3. Step 3: Cross multiply
   1,026.68x = 1,417.34 × 712.49
4. Step 4: Simplify right side
   1,026.68x = 1,009,835.27
5. Step 5: Solve for x
   x = 1,009,835.27/1,026.68
6. Step 6: Final answer
   x = 983.60