Finding the Fourth Proportional to 1,451.83, 2,003.54 and 788.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.83 : 2,003.54 = 788.69 : x
2. Step 2: Convert to fraction form
   1,451.83/2,003.54 = 788.69/x
3. Step 3: Cross multiply
   1,451.83x = 2,003.54 × 788.69
4. Step 4: Simplify right side
   1,451.83x = 1,580,161.94
5. Step 5: Solve for x
   x = 1,580,161.94/1,451.83
6. Step 6: Final answer
   x = 1,088.39