Finding the Fourth Proportional to 1,439.70, 2,156.41 and 882.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,439.70 : 2,156.41 = 882.72 : x
2. Step 2: Convert to fraction form
   1,439.70/2,156.41 = 882.72/x
3. Step 3: Cross multiply
   1,439.70x = 2,156.41 × 882.72
4. Step 4: Simplify right side
   1,439.70x = 1,903,515.89
5. Step 5: Solve for x
   x = 1,903,515.89/1,439.70
6. Step 6: Final answer
   x = 1,322.16