Finding the Fourth Proportional to 3,688.03, 5,091.34 and 2,430.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,688.03 : 5,091.34 = 2,430.91 : x
2. Step 2: Convert to fraction form
   3,688.03/5,091.34 = 2,430.91/x
3. Step 3: Cross multiply
   3,688.03x = 5,091.34 × 2,430.91
4. Step 4: Simplify right side
   3,688.03x = 12,376,563.86
5. Step 5: Solve for x
   x = 12,376,563.86/3,688.03
6. Step 6: Final answer
   x = 3,355.88