Finding the Fourth Proportional to 1,488.34, 2,045.30 and 1,207.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.34 : 2,045.30 = 1,207.98 : x
2. Step 2: Convert to fraction form
   1,488.34/2,045.30 = 1,207.98/x
3. Step 3: Cross multiply
   1,488.34x = 2,045.30 × 1,207.98
4. Step 4: Simplify right side
   1,488.34x = 2,470,675.45
5. Step 5: Solve for x
   x = 2,470,675.45/1,488.34
6. Step 6: Final answer
   x = 1,660.02