Finding the Fourth Proportional to 2,457.86, 3,390.42 and 1,573.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.86 : 3,390.42 = 1,573.34 : x
2. Step 2: Convert to fraction form
   2,457.86/3,390.42 = 1,573.34/x
3. Step 3: Cross multiply
   2,457.86x = 3,390.42 × 1,573.34
4. Step 4: Simplify right side
   2,457.86x = 5,334,283.40
5. Step 5: Solve for x
   x = 5,334,283.40/2,457.86
6. Step 6: Final answer
   x = 2,170.30