Finding the Fourth Proportional to 2,478.78, 3,420.74 and 1,484.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.78 : 3,420.74 = 1,484.10 : x
2. Step 2: Convert to fraction form
   2,478.78/3,420.74 = 1,484.10/x
3. Step 3: Cross multiply
   2,478.78x = 3,420.74 × 1,484.10
4. Step 4: Simplify right side
   2,478.78x = 5,076,720.23
5. Step 5: Solve for x
   x = 5,076,720.23/2,478.78
6. Step 6: Final answer
   x = 2,048.07