Finding the Fourth Proportional to 1,938.12, 2,904.12 and 1,156.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.12 : 2,904.12 = 1,156.20 : x
2. Step 2: Convert to fraction form
   1,938.12/2,904.12 = 1,156.20/x
3. Step 3: Cross multiply
   1,938.12x = 2,904.12 × 1,156.20
4. Step 4: Simplify right side
   1,938.12x = 3,357,743.54
5. Step 5: Solve for x
   x = 3,357,743.54/1,938.12
6. Step 6: Final answer
   x = 1,732.47