Finding the Fourth Proportional to 2,978.47, 4,467.76 and 2,053.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.47 : 4,467.76 = 2,053.79 : x
2. Step 2: Convert to fraction form
   2,978.47/4,467.76 = 2,053.79/x
3. Step 3: Cross multiply
   2,978.47x = 4,467.76 × 2,053.79
4. Step 4: Simplify right side
   2,978.47x = 9,175,830.09
5. Step 5: Solve for x
   x = 9,175,830.09/2,978.47
6. Step 6: Final answer
   x = 3,080.72