Finding the Fourth Proportional to 1,989.79, 2,987.51 and 1,444.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.79 : 2,987.51 = 1,444.69 : x
2. Step 2: Convert to fraction form
   1,989.79/2,987.51 = 1,444.69/x
3. Step 3: Cross multiply
   1,989.79x = 2,987.51 × 1,444.69
4. Step 4: Simplify right side
   1,989.79x = 4,316,025.82
5. Step 5: Solve for x
   x = 4,316,025.82/1,989.79
6. Step 6: Final answer
   x = 2,169.09