Finding the Fourth Proportional to 1,079.94, 1,619.91 and 502.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.94 : 1,619.91 = 502.50 : x
2. Step 2: Convert to fraction form
   1,079.94/1,619.91 = 502.50/x
3. Step 3: Cross multiply
   1,079.94x = 1,619.91 × 502.50
4. Step 4: Simplify right side
   1,079.94x = 814,004.78
5. Step 5: Solve for x
   x = 814,004.78/1,079.94
6. Step 6: Final answer
   x = 753.75