Finding the Fourth Proportional to 1,789.89, 2,470.03 and 993.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.89 : 2,470.03 = 993.22 : x
2. Step 2: Convert to fraction form
   1,789.89/2,470.03 = 993.22/x
3. Step 3: Cross multiply
   1,789.89x = 2,470.03 × 993.22
4. Step 4: Simplify right side
   1,789.89x = 2,453,283.20
5. Step 5: Solve for x
   x = 2,453,283.20/1,789.89
6. Step 6: Final answer
   x = 1,370.63