Finding the Fourth Proportional to 1,978.04, 2,729.28 and 1,505.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.04 : 2,729.28 = 1,505.84 : x
2. Step 2: Convert to fraction form
   1,978.04/2,729.28 = 1,505.84/x
3. Step 3: Cross multiply
   1,978.04x = 2,729.28 × 1,505.84
4. Step 4: Simplify right side
   1,978.04x = 4,109,859.00
5. Step 5: Solve for x
   x = 4,109,859.00/1,978.04
6. Step 6: Final answer
   x = 2,077.74