Finding the Fourth Proportional to 1,438.49, 1,983.56 and 1,106.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438.49 : 1,983.56 = 1,106.19 : x
2. Step 2: Convert to fraction form
   1,438.49/1,983.56 = 1,106.19/x
3. Step 3: Cross multiply
   1,438.49x = 1,983.56 × 1,106.19
4. Step 4: Simplify right side
   1,438.49x = 2,194,188.71
5. Step 5: Solve for x
   x = 2,194,188.71/1,438.49
6. Step 6: Final answer
   x = 1,525.34