Finding the Fourth Proportional to 2,181.67, 3,010.56 and 1,186.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.67 : 3,010.56 = 1,186.93 : x
2. Step 2: Convert to fraction form
   2,181.67/3,010.56 = 1,186.93/x
3. Step 3: Cross multiply
   2,181.67x = 3,010.56 × 1,186.93
4. Step 4: Simplify right side
   2,181.67x = 3,573,323.29
5. Step 5: Solve for x
   x = 3,573,323.29/2,181.67
6. Step 6: Final answer
   x = 1,637.89