Finding the Fourth Proportional to 2,164.99, 2,987.61 and 1,368.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,164.99 : 2,987.61 = 1,368.74 : x
2. Step 2: Convert to fraction form
   2,164.99/2,987.61 = 1,368.74/x
3. Step 3: Cross multiply
   2,164.99x = 2,987.61 × 1,368.74
4. Step 4: Simplify right side
   2,164.99x = 4,089,261.31
5. Step 5: Solve for x
   x = 4,089,261.31/2,164.99
6. Step 6: Final answer
   x = 1,888.82