Finding the Fourth Proportional to 1,375.01, 2,061.89 and 819.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.01 : 2,061.89 = 819.98 : x
2. Step 2: Convert to fraction form
   1,375.01/2,061.89 = 819.98/x
3. Step 3: Cross multiply
   1,375.01x = 2,061.89 × 819.98
4. Step 4: Simplify right side
   1,375.01x = 1,690,708.56
5. Step 5: Solve for x
   x = 1,690,708.56/1,375.01
6. Step 6: Final answer
   x = 1,229.60