Finding the Fourth Proportional to 1,897.31, 2,844.30 and 742.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.31 : 2,844.30 = 742.25 : x
2. Step 2: Convert to fraction form
   1,897.31/2,844.30 = 742.25/x
3. Step 3: Cross multiply
   1,897.31x = 2,844.30 × 742.25
4. Step 4: Simplify right side
   1,897.31x = 2,111,181.68
5. Step 5: Solve for x
   x = 2,111,181.68/1,897.31
6. Step 6: Final answer
   x = 1,112.72