Finding the Fourth Proportional to 3,430.66, 5,146.72 and 1,090.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,430.66 : 5,146.72 = 1,090.38 : x
2. Step 2: Convert to fraction form
   3,430.66/5,146.72 = 1,090.38/x
3. Step 3: Cross multiply
   3,430.66x = 5,146.72 × 1,090.38
4. Step 4: Simplify right side
   3,430.66x = 5,611,880.55
5. Step 5: Solve for x
   x = 5,611,880.55/3,430.66
6. Step 6: Final answer
   x = 1,635.80