Finding the Fourth Proportional to 2,520.06, 3,780.48 and 788.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.06 : 3,780.48 = 788.28 : x
2. Step 2: Convert to fraction form
   2,520.06/3,780.48 = 788.28/x
3. Step 3: Cross multiply
   2,520.06x = 3,780.48 × 788.28
4. Step 4: Simplify right side
   2,520.06x = 2,980,076.77
5. Step 5: Solve for x
   x = 2,980,076.77/2,520.06
6. Step 6: Final answer
   x = 1,182.54