Finding the Fourth Proportional to 1,940.13, 2,905.56 and 1,061.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.13 : 2,905.56 = 1,061.30 : x
2. Step 2: Convert to fraction form
   1,940.13/2,905.56 = 1,061.30/x
3. Step 3: Cross multiply
   1,940.13x = 2,905.56 × 1,061.30
4. Step 4: Simplify right side
   1,940.13x = 3,083,678.09
5. Step 5: Solve for x
   x = 3,083,678.09/1,940.13
6. Step 6: Final answer
   x = 1,589.42