Finding the Fourth Proportional to 2,557.89, 3,527.69 and 2,298.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557.89 : 3,527.69 = 2,298.69 : x
2. Step 2: Convert to fraction form
   2,557.89/3,527.69 = 2,298.69/x
3. Step 3: Cross multiply
   2,557.89x = 3,527.69 × 2,298.69
4. Step 4: Simplify right side
   2,557.89x = 8,109,054.23
5. Step 5: Solve for x
   x = 8,109,054.23/2,557.89
6. Step 6: Final answer
   x = 3,170.21