Finding the Fourth Proportional to 3,962.31, 5,943.12 and 1,189.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,962.31 : 5,943.12 = 1,189.61 : x
2. Step 2: Convert to fraction form
   3,962.31/5,943.12 = 1,189.61/x
3. Step 3: Cross multiply
   3,962.31x = 5,943.12 × 1,189.61
4. Step 4: Simplify right side
   3,962.31x = 7,069,965.27
5. Step 5: Solve for x
   x = 7,069,965.27/3,962.31
6. Step 6: Final answer
   x = 1,784.30