Finding the Fourth Proportional to 2,477.10, 3,714.45 and 1,380.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477.10 : 3,714.45 = 1,380.30 : x
2. Step 2: Convert to fraction form
   2,477.10/3,714.45 = 1,380.30/x
3. Step 3: Cross multiply
   2,477.10x = 3,714.45 × 1,380.30
4. Step 4: Simplify right side
   2,477.10x = 5,127,055.34
5. Step 5: Solve for x
   x = 5,127,055.34/2,477.10
6. Step 6: Final answer
   x = 2,069.78