Finding the Fourth Proportional to 1,448.82, 1,998.61 and 916.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.82 : 1,998.61 = 916.72 : x
2. Step 2: Convert to fraction form
   1,448.82/1,998.61 = 916.72/x
3. Step 3: Cross multiply
   1,448.82x = 1,998.61 × 916.72
4. Step 4: Simplify right side
   1,448.82x = 1,832,158.47
5. Step 5: Solve for x
   x = 1,832,158.47/1,448.82
6. Step 6: Final answer
   x = 1,264.59