Finding the Fourth Proportional to 1,412.83, 1,948.72 and 971.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.83 : 1,948.72 = 971.79 : x
2. Step 2: Convert to fraction form
   1,412.83/1,948.72 = 971.79/x
3. Step 3: Cross multiply
   1,412.83x = 1,948.72 × 971.79
4. Step 4: Simplify right side
   1,412.83x = 1,893,746.61
5. Step 5: Solve for x
   x = 1,893,746.61/1,412.83
6. Step 6: Final answer
   x = 1,340.39