Finding the Fourth Proportional to 3,394.54, 5,090.54 and 1,172.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,394.54 : 5,090.54 = 1,172.76 : x
2. Step 2: Convert to fraction form
   3,394.54/5,090.54 = 1,172.76/x
3. Step 3: Cross multiply
   3,394.54x = 5,090.54 × 1,172.76
4. Step 4: Simplify right side
   3,394.54x = 5,969,981.69
5. Step 5: Solve for x
   x = 5,969,981.69/3,394.54
6. Step 6: Final answer
   x = 1,758.70