Finding the Fourth Proportional to 3,528.78, 5,290.56 and 1,748.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,528.78 : 5,290.56 = 1,748.82 : x
2. Step 2: Convert to fraction form
   3,528.78/5,290.56 = 1,748.82/x
3. Step 3: Cross multiply
   3,528.78x = 5,290.56 × 1,748.82
4. Step 4: Simplify right side
   3,528.78x = 9,252,237.14
5. Step 5: Solve for x
   x = 9,252,237.14/3,528.78
6. Step 6: Final answer
   x = 2,621.94