Finding the Fourth Proportional to 1,872.45, 2,583.29 and 1,086.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,872.45 : 2,583.29 = 1,086.35 : x
2. Step 2: Convert to fraction form
   1,872.45/2,583.29 = 1,086.35/x
3. Step 3: Cross multiply
   1,872.45x = 2,583.29 × 1,086.35
4. Step 4: Simplify right side
   1,872.45x = 2,806,346.89
5. Step 5: Solve for x
   x = 2,806,346.89/1,872.45
6. Step 6: Final answer
   x = 1,498.76