Finding the Fourth Proportional to 1,885.56, 2,828.90 and 1,064.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.56 : 2,828.90 = 1,064.40 : x
2. Step 2: Convert to fraction form
   1,885.56/2,828.90 = 1,064.40/x
3. Step 3: Cross multiply
   1,885.56x = 2,828.90 × 1,064.40
4. Step 4: Simplify right side
   1,885.56x = 3,011,061.69
5. Step 5: Solve for x
   x = 3,011,061.69/1,885.56
6. Step 6: Final answer
   x = 1,596.91