Finding the Fourth Proportional to 1,461.95, 2,017.59 and 872.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,461.95 : 2,017.59 = 872.57 : x
2. Step 2: Convert to fraction form
   1,461.95/2,017.59 = 872.57/x
3. Step 3: Cross multiply
   1,461.95x = 2,017.59 × 872.57
4. Step 4: Simplify right side
   1,461.95x = 1,760,478.42
5. Step 5: Solve for x
   x = 1,760,478.42/1,461.95
6. Step 6: Final answer
   x = 1,204.20