Finding the Fourth Proportional to 1,374.72, 1,896.45 and 902.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,374.72 : 1,896.45 = 902.43 : x
2. Step 2: Convert to fraction form
   1,374.72/1,896.45 = 902.43/x
3. Step 3: Cross multiply
   1,374.72x = 1,896.45 × 902.43
4. Step 4: Simplify right side
   1,374.72x = 1,711,413.37
5. Step 5: Solve for x
   x = 1,711,413.37/1,374.72
6. Step 6: Final answer
   x = 1,244.92