Finding the Fourth Proportional to 2,973.48, 4,100.94 and 2,557.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,973.48 : 4,100.94 = 2,557.80 : x
2. Step 2: Convert to fraction form
   2,973.48/4,100.94 = 2,557.80/x
3. Step 3: Cross multiply
   2,973.48x = 4,100.94 × 2,557.80
4. Step 4: Simplify right side
   2,973.48x = 10,489,384.33
5. Step 5: Solve for x
   x = 10,489,384.33/2,973.48
6. Step 6: Final answer
   x = 3,527.65