Finding the Fourth Proportional to 1,550.68, 2,140.50 and 1,085.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,550.68 : 2,140.50 = 1,085.56 : x
2. Step 2: Convert to fraction form
   1,550.68/2,140.50 = 1,085.56/x
3. Step 3: Cross multiply
   1,550.68x = 2,140.50 × 1,085.56
4. Step 4: Simplify right side
   1,550.68x = 2,323,641.18
5. Step 5: Solve for x
   x = 2,323,641.18/1,550.68
6. Step 6: Final answer
   x = 1,498.47