Finding the Fourth Proportional to 1,053.88, 1,454.33 and 581.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.88 : 1,454.33 = 581.76 : x
2. Step 2: Convert to fraction form
   1,053.88/1,454.33 = 581.76/x
3. Step 3: Cross multiply
   1,053.88x = 1,454.33 × 581.76
4. Step 4: Simplify right side
   1,053.88x = 846,060.84
5. Step 5: Solve for x
   x = 846,060.84/1,053.88
6. Step 6: Final answer
   x = 802.81