Finding the Fourth Proportional to 2,181.82, 3,010.65 and 1,237.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.82 : 3,010.65 = 1,237.72 : x
2. Step 2: Convert to fraction form
   2,181.82/3,010.65 = 1,237.72/x
3. Step 3: Cross multiply
   2,181.82x = 3,010.65 × 1,237.72
4. Step 4: Simplify right side
   2,181.82x = 3,726,341.72
5. Step 5: Solve for x
   x = 3,726,341.72/2,181.82
6. Step 6: Final answer
   x = 1,707.91