Finding the Fourth Proportional to 3,752.78, 5,630.00 and 1,287.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,752.78 : 5,630.00 = 1,287.54 : x
2. Step 2: Convert to fraction form
   3,752.78/5,630.00 = 1,287.54/x
3. Step 3: Cross multiply
   3,752.78x = 5,630.00 × 1,287.54
4. Step 4: Simplify right side
   3,752.78x = 7,248,843.76
5. Step 5: Solve for x
   x = 7,248,843.76/3,752.78
6. Step 6: Final answer
   x = 1,931.60