Finding the Fourth Proportional to 1,436.50, 1,983.30 and 1,121.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.50 : 1,983.30 = 1,121.22 : x
2. Step 2: Convert to fraction form
   1,436.50/1,983.30 = 1,121.22/x
3. Step 3: Cross multiply
   1,436.50x = 1,983.30 × 1,121.22
4. Step 4: Simplify right side
   1,436.50x = 2,223,715.63
5. Step 5: Solve for x
   x = 2,223,715.63/1,436.50
6. Step 6: Final answer
   x = 1,548.01