Finding the Fourth Proportional to 1,801.49, 2,485.81 and 1,045.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,801.49 : 2,485.81 = 1,045.25 : x
2. Step 2: Convert to fraction form
   1,801.49/2,485.81 = 1,045.25/x
3. Step 3: Cross multiply
   1,801.49x = 2,485.81 × 1,045.25
4. Step 4: Simplify right side
   1,801.49x = 2,598,277.86
5. Step 5: Solve for x
   x = 2,598,277.86/1,801.49
6. Step 6: Final answer
   x = 1,442.30