Finding the Fourth Proportional to 2,479.07, 3,412.53 and 2,142.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479.07 : 3,412.53 = 2,142.82 : x
2. Step 2: Convert to fraction form
   2,479.07/3,412.53 = 2,142.82/x
3. Step 3: Cross multiply
   2,479.07x = 3,412.53 × 2,142.82
4. Step 4: Simplify right side
   2,479.07x = 7,312,437.53
5. Step 5: Solve for x
   x = 7,312,437.53/2,479.07
6. Step 6: Final answer
   x = 2,949.67