Finding the Fourth Proportional to 1,667.15, 2,500.99 and 512.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.15 : 2,500.99 = 512.63 : x
2. Step 2: Convert to fraction form
   1,667.15/2,500.99 = 512.63/x
3. Step 3: Cross multiply
   1,667.15x = 2,500.99 × 512.63
4. Step 4: Simplify right side
   1,667.15x = 1,282,068.72
5. Step 5: Solve for x
   x = 1,282,068.72/1,667.15
6. Step 6: Final answer
   x = 769.02