Finding the Fourth Proportional to 1,676.13, 2,312.89 and 929.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,676.13 : 2,312.89 = 929.89 : x
2. Step 2: Convert to fraction form
   1,676.13/2,312.89 = 929.89/x
3. Step 3: Cross multiply
   1,676.13x = 2,312.89 × 929.89
4. Step 4: Simplify right side
   1,676.13x = 2,150,717.07
5. Step 5: Solve for x
   x = 2,150,717.07/1,676.13
6. Step 6: Final answer
   x = 1,283.14