Finding the Fourth Proportional to 5,264.67, 7,897.83 and 1,978.01

Step by Step Solution

1. Step 1: Write the proportion equation
   5,264.67 : 7,897.83 = 1,978.01 : x
2. Step 2: Convert to fraction form
   5,264.67/7,897.83 = 1,978.01/x
3. Step 3: Cross multiply
   5,264.67x = 7,897.83 × 1,978.01
4. Step 4: Simplify right side
   5,264.67x = 15,621,986.72
5. Step 5: Solve for x
   x = 15,621,986.72/5,264.67
6. Step 6: Final answer
   x = 2,967.32