Finding the Fourth Proportional to 1,518.01, 2,278.43 and 788.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,518.01 : 2,278.43 = 788.10 : x
2. Step 2: Convert to fraction form
   1,518.01/2,278.43 = 788.10/x
3. Step 3: Cross multiply
   1,518.01x = 2,278.43 × 788.10
4. Step 4: Simplify right side
   1,518.01x = 1,795,615.35
5. Step 5: Solve for x
   x = 1,795,615.35/1,518.01
6. Step 6: Final answer
   x = 1,182.88