Finding the Fourth Proportional to 1,427.02, 1,968.58 and 1,111.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.02 : 1,968.58 = 1,111.72 : x
2. Step 2: Convert to fraction form
   1,427.02/1,968.58 = 1,111.72/x
3. Step 3: Cross multiply
   1,427.02x = 1,968.58 × 1,111.72
4. Step 4: Simplify right side
   1,427.02x = 2,188,509.76
5. Step 5: Solve for x
   x = 2,188,509.76/1,427.02
6. Step 6: Final answer
   x = 1,533.62