Finding the Fourth Proportional to 2,777.85, 4,164.03 and 1,298.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,777.85 : 4,164.03 = 1,298.61 : x
2. Step 2: Convert to fraction form
   2,777.85/4,164.03 = 1,298.61/x
3. Step 3: Cross multiply
   2,777.85x = 4,164.03 × 1,298.61
4. Step 4: Simplify right side
   2,777.85x = 5,407,451.00
5. Step 5: Solve for x
   x = 5,407,451.00/2,777.85
6. Step 6: Final answer
   x = 1,946.63