Finding the Fourth Proportional to 2,882.76, 3,978.48 and 1,888.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,882.76 : 3,978.48 = 1,888.56 : x
2. Step 2: Convert to fraction form
   2,882.76/3,978.48 = 1,888.56/x
3. Step 3: Cross multiply
   2,882.76x = 3,978.48 × 1,888.56
4. Step 4: Simplify right side
   2,882.76x = 7,513,598.19
5. Step 5: Solve for x
   x = 7,513,598.19/2,882.76
6. Step 6: Final answer
   x = 2,606.39