Finding the Fourth Proportional to 1,456.06, 2,185.15 and 1,091.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.06 : 2,185.15 = 1,091.83 : x
2. Step 2: Convert to fraction form
   1,456.06/2,185.15 = 1,091.83/x
3. Step 3: Cross multiply
   1,456.06x = 2,185.15 × 1,091.83
4. Step 4: Simplify right side
   1,456.06x = 2,385,812.32
5. Step 5: Solve for x
   x = 2,385,812.32/1,456.06
6. Step 6: Final answer
   x = 1,638.54