Finding the Fourth Proportional to 1,436.02, 2,139.59 and 1,341.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.02 : 2,139.59 = 1,341.72 : x
2. Step 2: Convert to fraction form
   1,436.02/2,139.59 = 1,341.72/x
3. Step 3: Cross multiply
   1,436.02x = 2,139.59 × 1,341.72
4. Step 4: Simplify right side
   1,436.02x = 2,870,734.05
5. Step 5: Solve for x
   x = 2,870,734.05/1,436.02
6. Step 6: Final answer
   x = 1,999.09