Finding the Fourth Proportional to 2,069.46, 3,106.38 and 916.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.46 : 3,106.38 = 916.02 : x
2. Step 2: Convert to fraction form
   2,069.46/3,106.38 = 916.02/x
3. Step 3: Cross multiply
   2,069.46x = 3,106.38 × 916.02
4. Step 4: Simplify right side
   2,069.46x = 2,845,506.21
5. Step 5: Solve for x
   x = 2,845,506.21/2,069.46
6. Step 6: Final answer
   x = 1,375.00