Finding the Fourth Proportional to 1,359.84, 2,040.72 and 1,052.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.84 : 2,040.72 = 1,052.40 : x
2. Step 2: Convert to fraction form
   1,359.84/2,040.72 = 1,052.40/x
3. Step 3: Cross multiply
   1,359.84x = 2,040.72 × 1,052.40
4. Step 4: Simplify right side
   1,359.84x = 2,147,653.73
5. Step 5: Solve for x
   x = 2,147,653.73/1,359.84
6. Step 6: Final answer
   x = 1,579.34