Finding the Fourth Proportional to 945.55, 1,303.72 and 788.41

Step by Step Solution

1. Step 1: Write the proportion equation
   945.55 : 1,303.72 = 788.41 : x
2. Step 2: Convert to fraction form
   945.55/1,303.72 = 788.41/x
3. Step 3: Cross multiply
   945.55x = 1,303.72 × 788.41
4. Step 4: Simplify right side
   945.55x = 1,027,865.89
5. Step 5: Solve for x
   x = 1,027,865.89/945.55
6. Step 6: Final answer
   x = 1,087.06