Finding the Fourth Proportional to 7,314.98, 10,971.05 and 1,978.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,314.98 : 10,971.05 = 1,978.16 : x
2. Step 2: Convert to fraction form
   7,314.98/10,971.05 = 1,978.16/x
3. Step 3: Cross multiply
   7,314.98x = 10,971.05 × 1,978.16
4. Step 4: Simplify right side
   7,314.98x = 21,702,427.52
5. Step 5: Solve for x
   x = 21,702,427.52/7,314.98
6. Step 6: Final answer
   x = 2,966.85