Finding the Fourth Proportional to 1,568.42, 2,353.02 and 788.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,568.42 : 2,353.02 = 788.39 : x
2. Step 2: Convert to fraction form
   1,568.42/2,353.02 = 788.39/x
3. Step 3: Cross multiply
   1,568.42x = 2,353.02 × 788.39
4. Step 4: Simplify right side
   1,568.42x = 1,855,085.67
5. Step 5: Solve for x
   x = 1,855,085.67/1,568.42
6. Step 6: Final answer
   x = 1,182.78