Finding the Fourth Proportional to 3,401.07, 5,090.67 and 1,916.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.07 : 5,090.67 = 1,916.34 : x
2. Step 2: Convert to fraction form
   3,401.07/5,090.67 = 1,916.34/x
3. Step 3: Cross multiply
   3,401.07x = 5,090.67 × 1,916.34
4. Step 4: Simplify right side
   3,401.07x = 9,755,454.55
5. Step 5: Solve for x
   x = 9,755,454.55/3,401.07
6. Step 6: Final answer
   x = 2,868.35