Finding the Fourth Proportional to 2,182.01, 3,011.13 and 1,187.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.01 : 3,011.13 = 1,187.31 : x
2. Step 2: Convert to fraction form
   2,182.01/3,011.13 = 1,187.31/x
3. Step 3: Cross multiply
   2,182.01x = 3,011.13 × 1,187.31
4. Step 4: Simplify right side
   2,182.01x = 3,575,144.76
5. Step 5: Solve for x
   x = 3,575,144.76/2,182.01
6. Step 6: Final answer
   x = 1,638.46