Finding the Fourth Proportional to 2,363.60, 3,261.72 and 1,315.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,363.60 : 3,261.72 = 1,315.58 : x
2. Step 2: Convert to fraction form
   2,363.60/3,261.72 = 1,315.58/x
3. Step 3: Cross multiply
   2,363.60x = 3,261.72 × 1,315.58
4. Step 4: Simplify right side
   2,363.60x = 4,291,053.60
5. Step 5: Solve for x
   x = 4,291,053.60/2,363.60
6. Step 6: Final answer
   x = 1,815.47