Finding the Fourth Proportional to 1,493.88, 2,227.65 and 1,389.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,493.88 : 2,227.65 = 1,389.99 : x
2. Step 2: Convert to fraction form
   1,493.88/2,227.65 = 1,389.99/x
3. Step 3: Cross multiply
   1,493.88x = 2,227.65 × 1,389.99
4. Step 4: Simplify right side
   1,493.88x = 3,096,411.22
5. Step 5: Solve for x
   x = 3,096,411.22/1,493.88
6. Step 6: Final answer
   x = 2,072.73