Finding the Fourth Proportional to 2,776.78, 3,831.96 and 1,534.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.78 : 3,831.96 = 1,534.78 : x
2. Step 2: Convert to fraction form
   2,776.78/3,831.96 = 1,534.78/x
3. Step 3: Cross multiply
   2,776.78x = 3,831.96 × 1,534.78
4. Step 4: Simplify right side
   2,776.78x = 5,881,215.57
5. Step 5: Solve for x
   x = 5,881,215.57/2,776.78
6. Step 6: Final answer
   x = 2,118.00