Finding the Fourth Proportional to 1,938.21, 2,675.07 and 1,152.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.21 : 2,675.07 = 1,152.72 : x
2. Step 2: Convert to fraction form
   1,938.21/2,675.07 = 1,152.72/x
3. Step 3: Cross multiply
   1,938.21x = 2,675.07 × 1,152.72
4. Step 4: Simplify right side
   1,938.21x = 3,083,606.69
5. Step 5: Solve for x
   x = 3,083,606.69/1,938.21
6. Step 6: Final answer
   x = 1,590.96