Finding the Fourth Proportional to 1,820.96, 2,732.12 and 1,091.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820.96 : 2,732.12 = 1,091.06 : x
2. Step 2: Convert to fraction form
   1,820.96/2,732.12 = 1,091.06/x
3. Step 3: Cross multiply
   1,820.96x = 2,732.12 × 1,091.06
4. Step 4: Simplify right side
   1,820.96x = 2,980,906.85
5. Step 5: Solve for x
   x = 2,980,906.85/1,820.96
6. Step 6: Final answer
   x = 1,637.00