Finding the Fourth Proportional to 1,978.33, 2,730.30 and 1,699.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.33 : 2,730.30 = 1,699.49 : x
2. Step 2: Convert to fraction form
   1,978.33/2,730.30 = 1,699.49/x
3. Step 3: Cross multiply
   1,978.33x = 2,730.30 × 1,699.49
4. Step 4: Simplify right side
   1,978.33x = 4,640,117.55
5. Step 5: Solve for x
   x = 4,640,117.55/1,978.33
6. Step 6: Final answer
   x = 2,345.47