Finding the Fourth Proportional to 1,053.04, 1,579.86 and 921.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.04 : 1,579.86 = 921.82 : x
2. Step 2: Convert to fraction form
   1,053.04/1,579.86 = 921.82/x
3. Step 3: Cross multiply
   1,053.04x = 1,579.86 × 921.82
4. Step 4: Simplify right side
   1,053.04x = 1,456,346.55
5. Step 5: Solve for x
   x = 1,456,346.55/1,053.04
6. Step 6: Final answer
   x = 1,382.99