Finding the Fourth Proportional to 1,012.17, 1,396.89 and 592.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.17 : 1,396.89 = 592.50 : x
2. Step 2: Convert to fraction form
   1,012.17/1,396.89 = 592.50/x
3. Step 3: Cross multiply
   1,012.17x = 1,396.89 × 592.50
4. Step 4: Simplify right side
   1,012.17x = 827,650.34
5. Step 5: Solve for x
   x = 827,650.34/1,012.17
6. Step 6: Final answer
   x = 817.70