Finding the Fourth Proportional to 1,411.05, 1,945.10 and 1,111.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.05 : 1,945.10 = 1,111.75 : x
2. Step 2: Convert to fraction form
   1,411.05/1,945.10 = 1,111.75/x
3. Step 3: Cross multiply
   1,411.05x = 1,945.10 × 1,111.75
4. Step 4: Simplify right side
   1,411.05x = 2,162,464.93
5. Step 5: Solve for x
   x = 2,162,464.93/1,411.05
6. Step 6: Final answer
   x = 1,532.52