Finding the Fourth Proportional to 2,430.42, 3,645.23 and 788.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,430.42 : 3,645.23 = 788.15 : x
2. Step 2: Convert to fraction form
   2,430.42/3,645.23 = 788.15/x
3. Step 3: Cross multiply
   2,430.42x = 3,645.23 × 788.15
4. Step 4: Simplify right side
   2,430.42x = 2,872,965.86
5. Step 5: Solve for x
   x = 2,872,965.86/2,430.42
6. Step 6: Final answer
   x = 1,182.09