Finding the Fourth Proportional to 1,777.98, 2,667.12 and 479.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.98 : 2,667.12 = 479.52 : x
2. Step 2: Convert to fraction form
   1,777.98/2,667.12 = 479.52/x
3. Step 3: Cross multiply
   1,777.98x = 2,667.12 × 479.52
4. Step 4: Simplify right side
   1,777.98x = 1,278,937.38
5. Step 5: Solve for x
   x = 1,278,937.38/1,777.98
6. Step 6: Final answer
   x = 719.32