Finding the Fourth Proportional to 1,488.52, 2,054.16 and 929.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.52 : 2,054.16 = 929.20 : x
2. Step 2: Convert to fraction form
   1,488.52/2,054.16 = 929.20/x
3. Step 3: Cross multiply
   1,488.52x = 2,054.16 × 929.20
4. Step 4: Simplify right side
   1,488.52x = 1,908,725.47
5. Step 5: Solve for x
   x = 1,908,725.47/1,488.52
6. Step 6: Final answer
   x = 1,282.30