Finding the Fourth Proportional to 1,872.51, 2,584.16 and 1,086.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,872.51 : 2,584.16 = 1,086.57 : x
2. Step 2: Convert to fraction form
   1,872.51/2,584.16 = 1,086.57/x
3. Step 3: Cross multiply
   1,872.51x = 2,584.16 × 1,086.57
4. Step 4: Simplify right side
   1,872.51x = 2,807,870.73
5. Step 5: Solve for x
   x = 2,807,870.73/1,872.51
6. Step 6: Final answer
   x = 1,499.52