Finding the Fourth Proportional to 1,820.52, 2,730.72 and 999.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820.52 : 2,730.72 = 999.18 : x
2. Step 2: Convert to fraction form
   1,820.52/2,730.72 = 999.18/x
3. Step 3: Cross multiply
   1,820.52x = 2,730.72 × 999.18
4. Step 4: Simplify right side
   1,820.52x = 2,728,480.81
5. Step 5: Solve for x
   x = 2,728,480.81/1,820.52
6. Step 6: Final answer
   x = 1,498.74