Finding the Fourth Proportional to 1,051.30, 1,450.78 and 609.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.30 : 1,450.78 = 609.24 : x
2. Step 2: Convert to fraction form
   1,051.30/1,450.78 = 609.24/x
3. Step 3: Cross multiply
   1,051.30x = 1,450.78 × 609.24
4. Step 4: Simplify right side
   1,051.30x = 883,875.55
5. Step 5: Solve for x
   x = 883,875.55/1,051.30
6. Step 6: Final answer
   x = 840.75