Finding the Fourth Proportional to 1,066.98, 1,472.58 and 647.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.98 : 1,472.58 = 647.51 : x
2. Step 2: Convert to fraction form
   1,066.98/1,472.58 = 647.51/x
3. Step 3: Cross multiply
   1,066.98x = 1,472.58 × 647.51
4. Step 4: Simplify right side
   1,066.98x = 953,502.91
5. Step 5: Solve for x
   x = 953,502.91/1,066.98
6. Step 6: Final answer
   x = 893.64