Finding the Fourth Proportional to 2,219.89, 3,063.55 and 1,275.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.89 : 3,063.55 = 1,275.99 : x
2. Step 2: Convert to fraction form
   2,219.89/3,063.55 = 1,275.99/x
3. Step 3: Cross multiply
   2,219.89x = 3,063.55 × 1,275.99
4. Step 4: Simplify right side
   2,219.89x = 3,909,046.88
5. Step 5: Solve for x
   x = 3,909,046.88/2,219.89
6. Step 6: Final answer
   x = 1,760.92