Finding the Fourth Proportional to 1,434.72, 1,980.86 and 1,102.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.72 : 1,980.86 = 1,102.54 : x
2. Step 2: Convert to fraction form
   1,434.72/1,980.86 = 1,102.54/x
3. Step 3: Cross multiply
   1,434.72x = 1,980.86 × 1,102.54
4. Step 4: Simplify right side
   1,434.72x = 2,183,977.38
5. Step 5: Solve for x
   x = 2,183,977.38/1,434.72
6. Step 6: Final answer
   x = 1,522.23