Finding the Fourth Proportional to 1,616.59, 2,230.05 and 1,091.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,616.59 : 2,230.05 = 1,091.71 : x
2. Step 2: Convert to fraction form
   1,616.59/2,230.05 = 1,091.71/x
3. Step 3: Cross multiply
   1,616.59x = 2,230.05 × 1,091.71
4. Step 4: Simplify right side
   1,616.59x = 2,434,567.89
5. Step 5: Solve for x
   x = 2,434,567.89/1,616.59
6. Step 6: Final answer
   x = 1,505.99