Finding the Fourth Proportional to 1,635.39, 2,256.56 and 1,076.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,635.39 : 2,256.56 = 1,076.79 : x
2. Step 2: Convert to fraction form
   1,635.39/2,256.56 = 1,076.79/x
3. Step 3: Cross multiply
   1,635.39x = 2,256.56 × 1,076.79
4. Step 4: Simplify right side
   1,635.39x = 2,429,848.36
5. Step 5: Solve for x
   x = 2,429,848.36/1,635.39
6. Step 6: Final answer
   x = 1,485.79