Finding the Fourth Proportional to 1,427.56, 1,971.97 and 1,076.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.56 : 1,971.97 = 1,076.15 : x
2. Step 2: Convert to fraction form
   1,427.56/1,971.97 = 1,076.15/x
3. Step 3: Cross multiply
   1,427.56x = 1,971.97 × 1,076.15
4. Step 4: Simplify right side
   1,427.56x = 2,122,137.76
5. Step 5: Solve for x
   x = 2,122,137.76/1,427.56
6. Step 6: Final answer
   x = 1,486.55