Finding the Fourth Proportional to 1,535.03, 2,117.43 and 1,086.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,535.03 : 2,117.43 = 1,086.39 : x
2. Step 2: Convert to fraction form
   1,535.03/2,117.43 = 1,086.39/x
3. Step 3: Cross multiply
   1,535.03x = 2,117.43 × 1,086.39
4. Step 4: Simplify right side
   1,535.03x = 2,300,354.78
5. Step 5: Solve for x
   x = 2,300,354.78/1,535.03
6. Step 6: Final answer
   x = 1,498.58