Finding the Fourth Proportional to 1,833.05, 2,528.57 and 1,086.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,833.05 : 2,528.57 = 1,086.89 : x
2. Step 2: Convert to fraction form
   1,833.05/2,528.57 = 1,086.89/x
3. Step 3: Cross multiply
   1,833.05x = 2,528.57 × 1,086.89
4. Step 4: Simplify right side
   1,833.05x = 2,748,267.52
5. Step 5: Solve for x
   x = 2,748,267.52/1,833.05
6. Step 6: Final answer
   x = 1,499.28