Finding the Fourth Proportional to 1,003.60, 1,384.93 and 583.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.60 : 1,384.93 = 583.96 : x
2. Step 2: Convert to fraction form
   1,003.60/1,384.93 = 583.96/x
3. Step 3: Cross multiply
   1,003.60x = 1,384.93 × 583.96
4. Step 4: Simplify right side
   1,003.60x = 808,743.72
5. Step 5: Solve for x
   x = 808,743.72/1,003.60
6. Step 6: Final answer
   x = 805.84