Finding the Fourth Proportional to 1,451.87, 2,003.59 and 788.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.87 : 2,003.59 = 788.73 : x
2. Step 2: Convert to fraction form
   1,451.87/2,003.59 = 788.73/x
3. Step 3: Cross multiply
   1,451.87x = 2,003.59 × 788.73
4. Step 4: Simplify right side
   1,451.87x = 1,580,282.06
5. Step 5: Solve for x
   x = 1,580,282.06/1,451.87
6. Step 6: Final answer
   x = 1,088.44