Finding the Fourth Proportional to 1,472.72, 2,031.21 and 1,030.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,472.72 : 2,031.21 = 1,030.46 : x
2. Step 2: Convert to fraction form
   1,472.72/2,031.21 = 1,030.46/x
3. Step 3: Cross multiply
   1,472.72x = 2,031.21 × 1,030.46
4. Step 4: Simplify right side
   1,472.72x = 2,093,070.50
5. Step 5: Solve for x
   x = 2,093,070.50/1,472.72
6. Step 6: Final answer
   x = 1,421.23