Finding the Fourth Proportional to 3,888.99, 5,834.61 and 1,256.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,888.99 : 5,834.61 = 1,256.89 : x
2. Step 2: Convert to fraction form
   3,888.99/5,834.61 = 1,256.89/x
3. Step 3: Cross multiply
   3,888.99x = 5,834.61 × 1,256.89
4. Step 4: Simplify right side
   3,888.99x = 7,333,462.96
5. Step 5: Solve for x
   x = 7,333,462.96/3,888.99
6. Step 6: Final answer
   x = 1,885.70