Finding the Fourth Proportional to 1,420.04, 1,961.20 and 896.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420.04 : 1,961.20 = 896.38 : x
2. Step 2: Convert to fraction form
   1,420.04/1,961.20 = 896.38/x
3. Step 3: Cross multiply
   1,420.04x = 1,961.20 × 896.38
4. Step 4: Simplify right side
   1,420.04x = 1,757,980.46
5. Step 5: Solve for x
   x = 1,757,980.46/1,420.04
6. Step 6: Final answer
   x = 1,237.98