Finding the Fourth Proportional to 1,018.32, 1,521.50 and 753.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.32 : 1,521.50 = 753.65 : x
2. Step 2: Convert to fraction form
   1,018.32/1,521.50 = 753.65/x
3. Step 3: Cross multiply
   1,018.32x = 1,521.50 × 753.65
4. Step 4: Simplify right side
   1,018.32x = 1,146,678.48
5. Step 5: Solve for x
   x = 1,146,678.48/1,018.32
6. Step 6: Final answer
   x = 1,126.05