Finding the Fourth Proportional to 3,748.77, 5,166.45 and 2,487.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,748.77 : 5,166.45 = 2,487.60 : x
2. Step 2: Convert to fraction form
   3,748.77/5,166.45 = 2,487.60/x
3. Step 3: Cross multiply
   3,748.77x = 5,166.45 × 2,487.60
4. Step 4: Simplify right side
   3,748.77x = 12,852,061.02
5. Step 5: Solve for x
   x = 12,852,061.02/3,748.77
6. Step 6: Final answer
   x = 3,428.34