Finding the Fourth Proportional to 3,573.40, 5,361.63 and 1,931.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,573.40 : 5,361.63 = 1,931.10 : x
2. Step 2: Convert to fraction form
   3,573.40/5,361.63 = 1,931.10/x
3. Step 3: Cross multiply
   3,573.40x = 5,361.63 × 1,931.10
4. Step 4: Simplify right side
   3,573.40x = 10,353,847.72
5. Step 5: Solve for x
   x = 10,353,847.72/3,573.40
6. Step 6: Final answer
   x = 2,897.48