Finding the Fourth Proportional to 1,507.24, 2,080.28 and 877.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.24 : 2,080.28 = 877.86 : x
2. Step 2: Convert to fraction form
   1,507.24/2,080.28 = 877.86/x
3. Step 3: Cross multiply
   1,507.24x = 2,080.28 × 877.86
4. Step 4: Simplify right side
   1,507.24x = 1,826,192.81
5. Step 5: Solve for x
   x = 1,826,192.81/1,507.24
6. Step 6: Final answer
   x = 1,211.61