Finding the Fourth Proportional to 1,978.72, 2,970.60 and 1,614.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.72 : 2,970.60 = 1,614.22 : x
2. Step 2: Convert to fraction form
   1,978.72/2,970.60 = 1,614.22/x
3. Step 3: Cross multiply
   1,978.72x = 2,970.60 × 1,614.22
4. Step 4: Simplify right side
   1,978.72x = 4,795,201.93
5. Step 5: Solve for x
   x = 4,795,201.93/1,978.72
6. Step 6: Final answer
   x = 2,423.39