Finding the Fourth Proportional to 1,451.54, 2,003.12 and 788.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.54 : 2,003.12 = 788.38 : x
2. Step 2: Convert to fraction form
   1,451.54/2,003.12 = 788.38/x
3. Step 3: Cross multiply
   1,451.54x = 2,003.12 × 788.38
4. Step 4: Simplify right side
   1,451.54x = 1,579,219.75
5. Step 5: Solve for x
   x = 1,579,219.75/1,451.54
6. Step 6: Final answer
   x = 1,087.96