Finding the Fourth Proportional to 2,356.57, 3,251.98 and 1,308.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,356.57 : 3,251.98 = 1,308.70 : x
2. Step 2: Convert to fraction form
   2,356.57/3,251.98 = 1,308.70/x
3. Step 3: Cross multiply
   2,356.57x = 3,251.98 × 1,308.70
4. Step 4: Simplify right side
   2,356.57x = 4,255,866.23
5. Step 5: Solve for x
   x = 4,255,866.23/2,356.57
6. Step 6: Final answer
   x = 1,805.96