Finding the Fourth Proportional to 1,507.27, 2,079.67 and 877.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.27 : 2,079.67 = 877.42 : x
2. Step 2: Convert to fraction form
   1,507.27/2,079.67 = 877.42/x
3. Step 3: Cross multiply
   1,507.27x = 2,079.67 × 877.42
4. Step 4: Simplify right side
   1,507.27x = 1,824,733.65
5. Step 5: Solve for x
   x = 1,824,733.65/1,507.27
6. Step 6: Final answer
   x = 1,210.62