Finding the Fourth Proportional to 1,909.67, 2,849.85 and 1,898.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,909.67 : 2,849.85 = 1,898.72 : x
2. Step 2: Convert to fraction form
   1,909.67/2,849.85 = 1,898.72/x
3. Step 3: Cross multiply
   1,909.67x = 2,849.85 × 1,898.72
4. Step 4: Simplify right side
   1,909.67x = 5,411,057.70
5. Step 5: Solve for x
   x = 5,411,057.70/1,909.67
6. Step 6: Final answer
   x = 2,833.50