Finding the Fourth Proportional to 1,051.88, 1,451.52 and 609.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.88 : 1,451.52 = 609.72 : x
2. Step 2: Convert to fraction form
   1,051.88/1,451.52 = 609.72/x
3. Step 3: Cross multiply
   1,051.88x = 1,451.52 × 609.72
4. Step 4: Simplify right side
   1,051.88x = 885,020.77
5. Step 5: Solve for x
   x = 885,020.77/1,051.88
6. Step 6: Final answer
   x = 841.37