Finding the Fourth Proportional to 1,461.72, 2,017.50 and 872.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,461.72 : 2,017.50 = 872.70 : x
2. Step 2: Convert to fraction form
   1,461.72/2,017.50 = 872.70/x
3. Step 3: Cross multiply
   1,461.72x = 2,017.50 × 872.70
4. Step 4: Simplify right side
   1,461.72x = 1,760,672.25
5. Step 5: Solve for x
   x = 1,760,672.25/1,461.72
6. Step 6: Final answer
   x = 1,204.52