Finding the Fourth Proportional to 1,985.34, 2,737.88 and 1,321.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.34 : 2,737.88 = 1,321.04 : x
2. Step 2: Convert to fraction form
   1,985.34/2,737.88 = 1,321.04/x
3. Step 3: Cross multiply
   1,985.34x = 2,737.88 × 1,321.04
4. Step 4: Simplify right side
   1,985.34x = 3,616,849.00
5. Step 5: Solve for x
   x = 3,616,849.00/1,985.34
6. Step 6: Final answer
   x = 1,821.78