Finding the Fourth Proportional to 2,803.06, 4,205.33 and 1,397.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,803.06 : 4,205.33 = 1,397.89 : x
2. Step 2: Convert to fraction form
   2,803.06/4,205.33 = 1,397.89/x
3. Step 3: Cross multiply
   2,803.06x = 4,205.33 × 1,397.89
4. Step 4: Simplify right side
   2,803.06x = 5,878,571.25
5. Step 5: Solve for x
   x = 5,878,571.25/2,803.06
6. Step 6: Final answer
   x = 2,097.20