Finding the Fourth Proportional to 1,677.50, 2,500.45 and 1,624.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.50 : 2,500.45 = 1,624.42 : x
2. Step 2: Convert to fraction form
   1,677.50/2,500.45 = 1,624.42/x
3. Step 3: Cross multiply
   1,677.50x = 2,500.45 × 1,624.42
4. Step 4: Simplify right side
   1,677.50x = 4,061,780.99
5. Step 5: Solve for x
   x = 4,061,780.99/1,677.50
6. Step 6: Final answer
   x = 2,421.33