Finding the Fourth Proportional to 2,064.67, 2,848.80 and 1,225.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.67 : 2,848.80 = 1,225.65 : x
2. Step 2: Convert to fraction form
   2,064.67/2,848.80 = 1,225.65/x
3. Step 3: Cross multiply
   2,064.67x = 2,848.80 × 1,225.65
4. Step 4: Simplify right side
   2,064.67x = 3,491,631.72
5. Step 5: Solve for x
   x = 3,491,631.72/2,064.67
6. Step 6: Final answer
   x = 1,691.14