Finding the Fourth Proportional to 1,012.84, 1,516.67 and 807.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.84 : 1,516.67 = 807.71 : x
2. Step 2: Convert to fraction form
   1,012.84/1,516.67 = 807.71/x
3. Step 3: Cross multiply
   1,012.84x = 1,516.67 × 807.71
4. Step 4: Simplify right side
   1,012.84x = 1,225,018.66
5. Step 5: Solve for x
   x = 1,225,018.66/1,012.84
6. Step 6: Final answer
   x = 1,209.49