Finding the Fourth Proportional to 1,898.89, 2,620.79 and 1,402.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.89 : 2,620.79 = 1,402.97 : x
2. Step 2: Convert to fraction form
   1,898.89/2,620.79 = 1,402.97/x
3. Step 3: Cross multiply
   1,898.89x = 2,620.79 × 1,402.97
4. Step 4: Simplify right side
   1,898.89x = 3,676,874.89
5. Step 5: Solve for x
   x = 3,676,874.89/1,898.89
6. Step 6: Final answer
   x = 1,936.33