Finding the Fourth Proportional to 1,026.30, 1,416.72 and 712.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,026.30 : 1,416.72 = 712.59 : x
2. Step 2: Convert to fraction form
   1,026.30/1,416.72 = 712.59/x
3. Step 3: Cross multiply
   1,026.30x = 1,416.72 × 712.59
4. Step 4: Simplify right side
   1,026.30x = 1,009,540.50
5. Step 5: Solve for x
   x = 1,009,540.50/1,026.30
6. Step 6: Final answer
   x = 983.67