Finding the Fourth Proportional to 3,376.05, 5,061.12 and 1,620.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,376.05 : 5,061.12 = 1,620.18 : x
2. Step 2: Convert to fraction form
   3,376.05/5,061.12 = 1,620.18/x
3. Step 3: Cross multiply
   3,376.05x = 5,061.12 × 1,620.18
4. Step 4: Simplify right side
   3,376.05x = 8,199,925.40
5. Step 5: Solve for x
   x = 8,199,925.40/3,376.05
6. Step 6: Final answer
   x = 2,428.85