Finding the Fourth Proportional to 2,523.80, 3,483.42 and 1,638.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,523.80 : 3,483.42 = 1,638.07 : x
2. Step 2: Convert to fraction form
   2,523.80/3,483.42 = 1,638.07/x
3. Step 3: Cross multiply
   2,523.80x = 3,483.42 × 1,638.07
4. Step 4: Simplify right side
   2,523.80x = 5,706,070.95
5. Step 5: Solve for x
   x = 5,706,070.95/2,523.80
6. Step 6: Final answer
   x = 2,260.90