Finding the Fourth Proportional to 3,573.32, 5,357.77 and 1,381.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,573.32 : 5,357.77 = 1,381.55 : x
2. Step 2: Convert to fraction form
   3,573.32/5,357.77 = 1,381.55/x
3. Step 3: Cross multiply
   3,573.32x = 5,357.77 × 1,381.55
4. Step 4: Simplify right side
   3,573.32x = 7,401,996.90
5. Step 5: Solve for x
   x = 7,401,996.90/3,573.32
6. Step 6: Final answer
   x = 2,071.46