Finding the Fourth Proportional to 1,468.60, 2,014.59 and 1,389.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,468.60 : 2,014.59 = 1,389.15 : x
2. Step 2: Convert to fraction form
   1,468.60/2,014.59 = 1,389.15/x
3. Step 3: Cross multiply
   1,468.60x = 2,014.59 × 1,389.15
4. Step 4: Simplify right side
   1,468.60x = 2,798,567.70
5. Step 5: Solve for x
   x = 2,798,567.70/1,468.60
6. Step 6: Final answer
   x = 1,905.61