Finding the Fourth Proportional to 1,050.56, 1,449.74 and 630.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.56 : 1,449.74 = 630.84 : x
2. Step 2: Convert to fraction form
   1,050.56/1,449.74 = 630.84/x
3. Step 3: Cross multiply
   1,050.56x = 1,449.74 × 630.84
4. Step 4: Simplify right side
   1,050.56x = 914,553.98
5. Step 5: Solve for x
   x = 914,553.98/1,050.56
6. Step 6: Final answer
   x = 870.54