Finding the Fourth Proportional to 2,309.59, 3,465.56 and 1,155.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.59 : 3,465.56 = 1,155.25 : x
2. Step 2: Convert to fraction form
   2,309.59/3,465.56 = 1,155.25/x
3. Step 3: Cross multiply
   2,309.59x = 3,465.56 × 1,155.25
4. Step 4: Simplify right side
   2,309.59x = 4,003,588.19
5. Step 5: Solve for x
   x = 4,003,588.19/2,309.59
6. Step 6: Final answer
   x = 1,733.46