Finding the Fourth Proportional to 1,435.80, 1,979.94 and 1,352.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.80 : 1,979.94 = 1,352.08 : x
2. Step 2: Convert to fraction form
   1,435.80/1,979.94 = 1,352.08/x
3. Step 3: Cross multiply
   1,435.80x = 1,979.94 × 1,352.08
4. Step 4: Simplify right side
   1,435.80x = 2,677,040.53
5. Step 5: Solve for x
   x = 2,677,040.53/1,435.80
6. Step 6: Final answer
   x = 1,864.50