Finding the Fourth Proportional to 1,984.77, 2,702.25 and 1,978.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,984.77 : 2,702.25 = 1,978.59 : x
2. Step 2: Convert to fraction form
   1,984.77/2,702.25 = 1,978.59/x
3. Step 3: Cross multiply
   1,984.77x = 2,702.25 × 1,978.59
4. Step 4: Simplify right side
   1,984.77x = 5,346,644.83
5. Step 5: Solve for x
   x = 5,346,644.83/1,984.77
6. Step 6: Final answer
   x = 2,693.84