Finding the Fourth Proportional to 1,485.02, 2,049.26 and 821.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.02 : 2,049.26 = 821.86 : x
2. Step 2: Convert to fraction form
   1,485.02/2,049.26 = 821.86/x
3. Step 3: Cross multiply
   1,485.02x = 2,049.26 × 821.86
4. Step 4: Simplify right side
   1,485.02x = 1,684,195.59
5. Step 5: Solve for x
   x = 1,684,195.59/1,485.02
6. Step 6: Final answer
   x = 1,134.12