Finding the Fourth Proportional to 1,914.59, 2,870.06 and 926.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.59 : 2,870.06 = 926.79 : x
2. Step 2: Convert to fraction form
   1,914.59/2,870.06 = 926.79/x
3. Step 3: Cross multiply
   1,914.59x = 2,870.06 × 926.79
4. Step 4: Simplify right side
   1,914.59x = 2,659,938.27
5. Step 5: Solve for x
   x = 2,659,938.27/1,914.59
6. Step 6: Final answer
   x = 1,389.30