Finding the Fourth Proportional to 3,573.52, 5,362.56 and 1,931.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,573.52 : 5,362.56 = 1,931.20 : x
2. Step 2: Convert to fraction form
   3,573.52/5,362.56 = 1,931.20/x
3. Step 3: Cross multiply
   3,573.52x = 5,362.56 × 1,931.20
4. Step 4: Simplify right side
   3,573.52x = 10,356,175.87
5. Step 5: Solve for x
   x = 10,356,175.87/3,573.52
6. Step 6: Final answer
   x = 2,898.03