Finding the Fourth Proportional to 3,646.08, 5,468.76 and 1,980.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,646.08 : 5,468.76 = 1,980.72 : x
2. Step 2: Convert to fraction form
   3,646.08/5,468.76 = 1,980.72/x
3. Step 3: Cross multiply
   3,646.08x = 5,468.76 × 1,980.72
4. Step 4: Simplify right side
   3,646.08x = 10,832,082.31
5. Step 5: Solve for x
   x = 10,832,082.31/3,646.08
6. Step 6: Final answer
   x = 2,970.88