Finding the Fourth Proportional to 1,451.59, 2,003.21 and 788.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.59 : 2,003.21 = 788.45 : x
2. Step 2: Convert to fraction form
   1,451.59/2,003.21 = 788.45/x
3. Step 3: Cross multiply
   1,451.59x = 2,003.21 × 788.45
4. Step 4: Simplify right side
   1,451.59x = 1,579,437.90
5. Step 5: Solve for x
   x = 1,579,437.90/1,451.59
6. Step 6: Final answer
   x = 1,088.08