Finding the Fourth Proportional to 2,064.41, 2,848.78 and 1,225.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.41 : 2,848.78 = 1,225.21 : x
2. Step 2: Convert to fraction form
   2,064.41/2,848.78 = 1,225.21/x
3. Step 3: Cross multiply
   2,064.41x = 2,848.78 × 1,225.21
4. Step 4: Simplify right side
   2,064.41x = 3,490,353.74
5. Step 5: Solve for x
   x = 3,490,353.74/2,064.41
6. Step 6: Final answer
   x = 1,690.73