Finding the Fourth Proportional to 2,164.71, 2,987.30 and 1,169.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,164.71 : 2,987.30 = 1,169.99 : x
2. Step 2: Convert to fraction form
   2,164.71/2,987.30 = 1,169.99/x
3. Step 3: Cross multiply
   2,164.71x = 2,987.30 × 1,169.99
4. Step 4: Simplify right side
   2,164.71x = 3,495,095.33
5. Step 5: Solve for x
   x = 3,495,095.33/2,164.71
6. Step 6: Final answer
   x = 1,614.58