Finding the Fourth Proportional to 1,872.17, 2,584.46 and 1,086.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,872.17 : 2,584.46 = 1,086.06 : x
2. Step 2: Convert to fraction form
   1,872.17/2,584.46 = 1,086.06/x
3. Step 3: Cross multiply
   1,872.17x = 2,584.46 × 1,086.06
4. Step 4: Simplify right side
   1,872.17x = 2,806,881.34
5. Step 5: Solve for x
   x = 2,806,881.34/1,872.17
6. Step 6: Final answer
   x = 1,499.27