Finding the Fourth Proportional to 2,378.03, 3,564.90 and 916.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,378.03 : 3,564.90 = 916.83 : x
2. Step 2: Convert to fraction form
   2,378.03/3,564.90 = 916.83/x
3. Step 3: Cross multiply
   2,378.03x = 3,564.90 × 916.83
4. Step 4: Simplify right side
   2,378.03x = 3,268,407.27
5. Step 5: Solve for x
   x = 3,268,407.27/2,378.03
6. Step 6: Final answer
   x = 1,374.42