Finding the Fourth Proportional to 1,572.24, 2,169.50 and 942.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,572.24 : 2,169.50 = 942.65 : x
2. Step 2: Convert to fraction form
   1,572.24/2,169.50 = 942.65/x
3. Step 3: Cross multiply
   1,572.24x = 2,169.50 × 942.65
4. Step 4: Simplify right side
   1,572.24x = 2,045,063.61
5. Step 5: Solve for x
   x = 2,045,063.61/1,572.24
6. Step 6: Final answer
   x = 1,300.73