Finding the Fourth Proportional to 3,453.31, 5,179.83 and 1,113.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,453.31 : 5,179.83 = 1,113.40 : x
2. Step 2: Convert to fraction form
   3,453.31/5,179.83 = 1,113.40/x
3. Step 3: Cross multiply
   3,453.31x = 5,179.83 × 1,113.40
4. Step 4: Simplify right side
   3,453.31x = 5,767,222.72
5. Step 5: Solve for x
   x = 5,767,222.72/3,453.31
6. Step 6: Final answer
   x = 1,670.06