Finding the Fourth Proportional to 705.00, 1,056.31 and 498.56

Step by Step Solution

1. Step 1: Write the proportion equation
   705.00 : 1,056.31 = 498.56 : x
2. Step 2: Convert to fraction form
   705.00/1,056.31 = 498.56/x
3. Step 3: Cross multiply
   705.00x = 1,056.31 × 498.56
4. Step 4: Simplify right side
   705.00x = 526,635.31
5. Step 5: Solve for x
   x = 526,635.31/705.00
6. Step 6: Final answer
   x = 747.00