Finding the Fourth Proportional to 2,868.89, 4,303.80 and 1,225.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.89 : 4,303.80 = 1,225.45 : x
2. Step 2: Convert to fraction form
   2,868.89/4,303.80 = 1,225.45/x
3. Step 3: Cross multiply
   2,868.89x = 4,303.80 × 1,225.45
4. Step 4: Simplify right side
   2,868.89x = 5,274,091.71
5. Step 5: Solve for x
   x = 5,274,091.71/2,868.89
6. Step 6: Final answer
   x = 1,838.37