Finding the Fourth Proportional to 2,180.04, 3,009.57 and 1,681.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.04 : 3,009.57 = 1,681.56 : x
2. Step 2: Convert to fraction form
   2,180.04/3,009.57 = 1,681.56/x
3. Step 3: Cross multiply
   2,180.04x = 3,009.57 × 1,681.56
4. Step 4: Simplify right side
   2,180.04x = 5,060,772.53
5. Step 5: Solve for x
   x = 5,060,772.53/2,180.04
6. Step 6: Final answer
   x = 2,321.41