Finding the Fourth Proportional to 1,613.94, 2,417.55 and 1,299.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.94 : 2,417.55 = 1,299.89 : x
2. Step 2: Convert to fraction form
   1,613.94/2,417.55 = 1,299.89/x
3. Step 3: Cross multiply
   1,613.94x = 2,417.55 × 1,299.89
4. Step 4: Simplify right side
   1,613.94x = 3,142,550.24
5. Step 5: Solve for x
   x = 3,142,550.24/1,613.94
6. Step 6: Final answer
   x = 1,947.13