Finding the Fourth Proportional to 2,190.94, 3,019.89 and 1,553.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.94 : 3,019.89 = 1,553.09 : x
2. Step 2: Convert to fraction form
   2,190.94/3,019.89 = 1,553.09/x
3. Step 3: Cross multiply
   2,190.94x = 3,019.89 × 1,553.09
4. Step 4: Simplify right side
   2,190.94x = 4,690,160.96
5. Step 5: Solve for x
   x = 4,690,160.96/2,190.94
6. Step 6: Final answer
   x = 2,140.71