Finding the Fourth Proportional to 1,448.04, 1,998.63 and 916.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.04 : 1,998.63 = 916.89 : x
2. Step 2: Convert to fraction form
   1,448.04/1,998.63 = 916.89/x
3. Step 3: Cross multiply
   1,448.04x = 1,998.63 × 916.89
4. Step 4: Simplify right side
   1,448.04x = 1,832,523.86
5. Step 5: Solve for x
   x = 1,832,523.86/1,448.04
6. Step 6: Final answer
   x = 1,265.52