Finding the Fourth Proportional to 2,428.83, 3,636.91 and 1,687.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.83 : 3,636.91 = 1,687.34 : x
2. Step 2: Convert to fraction form
   2,428.83/3,636.91 = 1,687.34/x
3. Step 3: Cross multiply
   2,428.83x = 3,636.91 × 1,687.34
4. Step 4: Simplify right side
   2,428.83x = 6,136,703.72
5. Step 5: Solve for x
   x = 6,136,703.72/2,428.83
6. Step 6: Final answer
   x = 2,526.61