Finding the Fourth Proportional to 2,505.30, 3,758.85 and 1,045.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,505.30 : 3,758.85 = 1,045.47 : x
2. Step 2: Convert to fraction form
   2,505.30/3,758.85 = 1,045.47/x
3. Step 3: Cross multiply
   2,505.30x = 3,758.85 × 1,045.47
4. Step 4: Simplify right side
   2,505.30x = 3,929,764.91
5. Step 5: Solve for x
   x = 3,929,764.91/2,505.30
6. Step 6: Final answer
   x = 1,568.58