Finding the Fourth Proportional to 1,507.23, 2,079.42 and 1,152.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.23 : 2,079.42 = 1,152.79 : x
2. Step 2: Convert to fraction form
   1,507.23/2,079.42 = 1,152.79/x
3. Step 3: Cross multiply
   1,507.23x = 2,079.42 × 1,152.79
4. Step 4: Simplify right side
   1,507.23x = 2,397,131.54
5. Step 5: Solve for x
   x = 2,397,131.54/1,507.23
6. Step 6: Final answer
   x = 1,590.42