Finding the Fourth Proportional to 1,465.98, 2,190.56 and 1,438.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,465.98 : 2,190.56 = 1,438.62 : x
2. Step 2: Convert to fraction form
   1,465.98/2,190.56 = 1,438.62/x
3. Step 3: Cross multiply
   1,465.98x = 2,190.56 × 1,438.62
4. Step 4: Simplify right side
   1,465.98x = 3,151,376.23
5. Step 5: Solve for x
   x = 3,151,376.23/1,465.98
6. Step 6: Final answer
   x = 2,149.67