Finding the Fourth Proportional to 1,528.75, 2,294.49 and 788.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528.75 : 2,294.49 = 788.89 : x
2. Step 2: Convert to fraction form
   1,528.75/2,294.49 = 788.89/x
3. Step 3: Cross multiply
   1,528.75x = 2,294.49 × 788.89
4. Step 4: Simplify right side
   1,528.75x = 1,810,100.22
5. Step 5: Solve for x
   x = 1,810,100.22/1,528.75
6. Step 6: Final answer
   x = 1,184.04