Finding the Fourth Proportional to 1,200.31, 1,801.27 and 469.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.31 : 1,801.27 = 469.79 : x
2. Step 2: Convert to fraction form
   1,200.31/1,801.27 = 469.79/x
3. Step 3: Cross multiply
   1,200.31x = 1,801.27 × 469.79
4. Step 4: Simplify right side
   1,200.31x = 846,218.63
5. Step 5: Solve for x
   x = 846,218.63/1,200.31
6. Step 6: Final answer
   x = 705.00