Finding the Fourth Proportional to 1,402.29, 1,936.89 and 1,111.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.29 : 1,936.89 = 1,111.41 : x
2. Step 2: Convert to fraction form
   1,402.29/1,936.89 = 1,111.41/x
3. Step 3: Cross multiply
   1,402.29x = 1,936.89 × 1,111.41
4. Step 4: Simplify right side
   1,402.29x = 2,152,678.91
5. Step 5: Solve for x
   x = 2,152,678.91/1,402.29
6. Step 6: Final answer
   x = 1,535.12