Finding the Fourth Proportional to 1,285.63, 1,925.86 and 591.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,285.63 : 1,925.86 = 591.33 : x
2. Step 2: Convert to fraction form
   1,285.63/1,925.86 = 591.33/x
3. Step 3: Cross multiply
   1,285.63x = 1,925.86 × 591.33
4. Step 4: Simplify right side
   1,285.63x = 1,138,807.69
5. Step 5: Solve for x
   x = 1,138,807.69/1,285.63
6. Step 6: Final answer
   x = 885.80