Finding the Fourth Proportional to 1,451.76, 2,003.42 and 788.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.76 : 2,003.42 = 788.59 : x
2. Step 2: Convert to fraction form
   1,451.76/2,003.42 = 788.59/x
3. Step 3: Cross multiply
   1,451.76x = 2,003.42 × 788.59
4. Step 4: Simplify right side
   1,451.76x = 1,579,876.98
5. Step 5: Solve for x
   x = 1,579,876.98/1,451.76
6. Step 6: Final answer
   x = 1,088.25