Finding the Fourth Proportional to 1,804.83, 2,490.71 and 997.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.83 : 2,490.71 = 997.31 : x
2. Step 2: Convert to fraction form
   1,804.83/2,490.71 = 997.31/x
3. Step 3: Cross multiply
   1,804.83x = 2,490.71 × 997.31
4. Step 4: Simplify right side
   1,804.83x = 2,483,992.55
5. Step 5: Solve for x
   x = 2,483,992.55/1,804.83
6. Step 6: Final answer
   x = 1,376.30