Finding the Fourth Proportional to 1,569.12, 2,354.49 and 1,308.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.12 : 2,354.49 = 1,308.30 : x
2. Step 2: Convert to fraction form
   1,569.12/2,354.49 = 1,308.30/x
3. Step 3: Cross multiply
   1,569.12x = 2,354.49 × 1,308.30
4. Step 4: Simplify right side
   1,569.12x = 3,080,379.27
5. Step 5: Solve for x
   x = 3,080,379.27/1,569.12
6. Step 6: Final answer
   x = 1,963.13