Finding the Fourth Proportional to 1,488.77, 2,057.06 and 1,436.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.77 : 2,057.06 = 1,436.21 : x
2. Step 2: Convert to fraction form
   1,488.77/2,057.06 = 1,436.21/x
3. Step 3: Cross multiply
   1,488.77x = 2,057.06 × 1,436.21
4. Step 4: Simplify right side
   1,488.77x = 2,954,362.96
5. Step 5: Solve for x
   x = 2,954,362.96/1,488.77
6. Step 6: Final answer
   x = 1,984.43