Finding the Fourth Proportional to 2,160.23, 3,237.89 and 1,899.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.23 : 3,237.89 = 1,899.72 : x
2. Step 2: Convert to fraction form
   2,160.23/3,237.89 = 1,899.72/x
3. Step 3: Cross multiply
   2,160.23x = 3,237.89 × 1,899.72
4. Step 4: Simplify right side
   2,160.23x = 6,151,084.39
5. Step 5: Solve for x
   x = 6,151,084.39/2,160.23
6. Step 6: Final answer
   x = 2,847.42