Finding the Fourth Proportional to 1,243.84, 1,856.72 and 1,141.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243.84 : 1,856.72 = 1,141.12 : x
2. Step 2: Convert to fraction form
   1,243.84/1,856.72 = 1,141.12/x
3. Step 3: Cross multiply
   1,243.84x = 1,856.72 × 1,141.12
4. Step 4: Simplify right side
   1,243.84x = 2,118,740.33
5. Step 5: Solve for x
   x = 2,118,740.33/1,243.84
6. Step 6: Final answer
   x = 1,703.39