Finding the Fourth Proportional to 3,430.84, 5,145.72 and 1,090.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,430.84 : 5,145.72 = 1,090.53 : x
2. Step 2: Convert to fraction form
   3,430.84/5,145.72 = 1,090.53/x
3. Step 3: Cross multiply
   3,430.84x = 5,145.72 × 1,090.53
4. Step 4: Simplify right side
   3,430.84x = 5,611,562.03
5. Step 5: Solve for x
   x = 5,611,562.03/3,430.84
6. Step 6: Final answer
   x = 1,635.62