Finding the Fourth Proportional to 1,448.90, 1,997.42 and 975.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.90 : 1,997.42 = 975.96 : x
2. Step 2: Convert to fraction form
   1,448.90/1,997.42 = 975.96/x
3. Step 3: Cross multiply
   1,448.90x = 1,997.42 × 975.96
4. Step 4: Simplify right side
   1,448.90x = 1,949,402.02
5. Step 5: Solve for x
   x = 1,949,402.02/1,448.90
6. Step 6: Final answer
   x = 1,345.44