Finding the Fourth Proportional to 2,577.10, 3,870.39 and 1,345.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.10 : 3,870.39 = 1,345.34 : x
2. Step 2: Convert to fraction form
   2,577.10/3,870.39 = 1,345.34/x
3. Step 3: Cross multiply
   2,577.10x = 3,870.39 × 1,345.34
4. Step 4: Simplify right side
   2,577.10x = 5,206,990.48
5. Step 5: Solve for x
   x = 5,206,990.48/2,577.10
6. Step 6: Final answer
   x = 2,020.48