Finding the Fourth Proportional to 1,436.79, 1,981.50 and 1,038.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.79 : 1,981.50 = 1,038.35 : x
2. Step 2: Convert to fraction form
   1,436.79/1,981.50 = 1,038.35/x
3. Step 3: Cross multiply
   1,436.79x = 1,981.50 × 1,038.35
4. Step 4: Simplify right side
   1,436.79x = 2,057,480.62
5. Step 5: Solve for x
   x = 2,057,480.62/1,436.79
6. Step 6: Final answer
   x = 1,432.00