Finding the Fourth Proportional to 1,511.06, 2,264.56 and 990.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511.06 : 2,264.56 = 990.83 : x
2. Step 2: Convert to fraction form
   1,511.06/2,264.56 = 990.83/x
3. Step 3: Cross multiply
   1,511.06x = 2,264.56 × 990.83
4. Step 4: Simplify right side
   1,511.06x = 2,243,797.17
5. Step 5: Solve for x
   x = 2,243,797.17/1,511.06
6. Step 6: Final answer
   x = 1,484.92