Finding the Fourth Proportional to 1,429, 1,971.94 and 839.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429 : 1,971.94 = 839.52 : x
2. Step 2: Convert to fraction form
   1,429/1,971.94 = 839.52/x
3. Step 3: Cross multiply
   1,429x = 1,971.94 × 839.52
4. Step 4: Simplify right side
   1,429x = 1,655,483.07
5. Step 5: Solve for x
   x = 1,655,483.07/1,429
6. Step 6: Final answer
   x = 1,158.49