Finding the Fourth Proportional to 1,438.56, 1,979.52 and 1,184.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438.56 : 1,979.52 = 1,184.16 : x
2. Step 2: Convert to fraction form
   1,438.56/1,979.52 = 1,184.16/x
3. Step 3: Cross multiply
   1,438.56x = 1,979.52 × 1,184.16
4. Step 4: Simplify right side
   1,438.56x = 2,344,068.40
5. Step 5: Solve for x
   x = 2,344,068.40/1,438.56
6. Step 6: Final answer
   x = 1,629.45