Finding the Fourth Proportional to 2,479.10, 3,419.89 and 1,888.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.10 : 3,419.89 = 1,888.61 : x
2. Step 2: Convert to fraction form
   2,479.10/3,419.89 = 1,888.61/x
3. Step 3: Cross multiply
   2,479.10x = 3,419.89 × 1,888.61
4. Step 4: Simplify right side
   2,479.10x = 6,458,816.63
5. Step 5: Solve for x
   x = 6,458,816.63/2,479.10
6. Step 6: Final answer
   x = 2,605.31