Finding the Fourth Proportional to 2,181.71, 3,010.73 and 1,187.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.71 : 3,010.73 = 1,187.01 : x
2. Step 2: Convert to fraction form
   2,181.71/3,010.73 = 1,187.01/x
3. Step 3: Cross multiply
   2,181.71x = 3,010.73 × 1,187.01
4. Step 4: Simplify right side
   2,181.71x = 3,573,760.68
5. Step 5: Solve for x
   x = 3,573,760.68/2,181.71
6. Step 6: Final answer
   x = 1,638.05