Finding the Fourth Proportional to 1,475.57, 2,036.31 and 812.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,475.57 : 2,036.31 = 812.42 : x
2. Step 2: Convert to fraction form
   1,475.57/2,036.31 = 812.42/x
3. Step 3: Cross multiply
   1,475.57x = 2,036.31 × 812.42
4. Step 4: Simplify right side
   1,475.57x = 1,654,328.79
5. Step 5: Solve for x
   x = 1,654,328.79/1,475.57
6. Step 6: Final answer
   x = 1,121.15