Finding the Fourth Proportional to 1,938.21, 2,674.66 and 1,053.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.21 : 2,674.66 = 1,053.99 : x
2. Step 2: Convert to fraction form
   1,938.21/2,674.66 = 1,053.99/x
3. Step 3: Cross multiply
   1,938.21x = 2,674.66 × 1,053.99
4. Step 4: Simplify right side
   1,938.21x = 2,819,064.89
5. Step 5: Solve for x
   x = 2,819,064.89/1,938.21
6. Step 6: Final answer
   x = 1,454.47