Finding the Fourth Proportional to 1,895.90, 2,842.72 and 725.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,895.90 : 2,842.72 = 725.99 : x
2. Step 2: Convert to fraction form
   1,895.90/2,842.72 = 725.99/x
3. Step 3: Cross multiply
   1,895.90x = 2,842.72 × 725.99
4. Step 4: Simplify right side
   1,895.90x = 2,063,770.26
5. Step 5: Solve for x
   x = 2,063,770.26/1,895.90
6. Step 6: Final answer
   x = 1,088.55