Finding the Fourth Proportional to 1,938.18, 2,674.90 and 1,152.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.18 : 2,674.90 = 1,152.30 : x
2. Step 2: Convert to fraction form
   1,938.18/2,674.90 = 1,152.30/x
3. Step 3: Cross multiply
   1,938.18x = 2,674.90 × 1,152.30
4. Step 4: Simplify right side
   1,938.18x = 3,082,287.27
5. Step 5: Solve for x
   x = 3,082,287.27/1,938.18
6. Step 6: Final answer
   x = 1,590.30