Finding the Fourth Proportional to 1,368.61, 1,901.42 and 1,352.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.61 : 1,901.42 = 1,352.21 : x
2. Step 2: Convert to fraction form
   1,368.61/1,901.42 = 1,352.21/x
3. Step 3: Cross multiply
   1,368.61x = 1,901.42 × 1,352.21
4. Step 4: Simplify right side
   1,368.61x = 2,571,107.94
5. Step 5: Solve for x
   x = 2,571,107.94/1,368.61
6. Step 6: Final answer
   x = 1,878.63