Finding the Fourth Proportional to 1,945.36, 2,915.42 and 1,066.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.36 : 2,915.42 = 1,066.54 : x
2. Step 2: Convert to fraction form
   1,945.36/2,915.42 = 1,066.54/x
3. Step 3: Cross multiply
   1,945.36x = 2,915.42 × 1,066.54
4. Step 4: Simplify right side
   1,945.36x = 3,109,412.05
5. Step 5: Solve for x
   x = 3,109,412.05/1,945.36
6. Step 6: Final answer
   x = 1,598.37