Finding the Fourth Proportional to 2,776.04, 4,162.92 and 1,387.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.04 : 4,162.92 = 1,387.72 : x
2. Step 2: Convert to fraction form
   2,776.04/4,162.92 = 1,387.72/x
3. Step 3: Cross multiply
   2,776.04x = 4,162.92 × 1,387.72
4. Step 4: Simplify right side
   2,776.04x = 5,776,967.34
5. Step 5: Solve for x
   x = 5,776,967.34/2,776.04
6. Step 6: Final answer
   x = 2,081.01