Finding the Fourth Proportional to 2,181.47, 3,010.46 and 1,237.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181.47 : 3,010.46 = 1,237.21 : x
2. Step 2: Convert to fraction form
   2,181.47/3,010.46 = 1,237.21/x
3. Step 3: Cross multiply
   2,181.47x = 3,010.46 × 1,237.21
4. Step 4: Simplify right side
   2,181.47x = 3,724,557.50
5. Step 5: Solve for x
   x = 3,724,557.50/2,181.47
6. Step 6: Final answer
   x = 1,707.37