Finding the Fourth Proportional to 1,200.34, 1,801.31 and 469.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.34 : 1,801.31 = 469.98 : x
2. Step 2: Convert to fraction form
   1,200.34/1,801.31 = 469.98/x
3. Step 3: Cross multiply
   1,200.34x = 1,801.31 × 469.98
4. Step 4: Simplify right side
   1,200.34x = 846,576.22
5. Step 5: Solve for x
   x = 846,576.22/1,200.34
6. Step 6: Final answer
   x = 705.28