Finding the Fourth Proportional to 1,530.72, 2,112.48 and 1,427.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.72 : 2,112.48 = 1,427.04 : x
2. Step 2: Convert to fraction form
   1,530.72/2,112.48 = 1,427.04/x
3. Step 3: Cross multiply
   1,530.72x = 2,112.48 × 1,427.04
4. Step 4: Simplify right side
   1,530.72x = 3,014,593.46
5. Step 5: Solve for x
   x = 3,014,593.46/1,530.72
6. Step 6: Final answer
   x = 1,969.40