Finding the Fourth Proportional to 1,063.91, 1,467.71 and 690.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,063.91 : 1,467.71 = 690.91 : x
2. Step 2: Convert to fraction form
   1,063.91/1,467.71 = 690.91/x
3. Step 3: Cross multiply
   1,063.91x = 1,467.71 × 690.91
4. Step 4: Simplify right side
   1,063.91x = 1,014,044.72
5. Step 5: Solve for x
   x = 1,014,044.72/1,063.91
6. Step 6: Final answer
   x = 953.13