Finding the Fourth Proportional to 2,199.79, 3,035.33 and 1,255.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,199.79 : 3,035.33 = 1,255.15 : x
2. Step 2: Convert to fraction form
   2,199.79/3,035.33 = 1,255.15/x
3. Step 3: Cross multiply
   2,199.79x = 3,035.33 × 1,255.15
4. Step 4: Simplify right side
   2,199.79x = 3,809,788.17
5. Step 5: Solve for x
   x = 3,809,788.17/2,199.79
6. Step 6: Final answer
   x = 1,731.89