Finding the Fourth Proportional to 1,914.84, 2,870.04 and 938.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.84 : 2,870.04 = 938.76 : x
2. Step 2: Convert to fraction form
   1,914.84/2,870.04 = 938.76/x
3. Step 3: Cross multiply
   1,914.84x = 2,870.04 × 938.76
4. Step 4: Simplify right side
   1,914.84x = 2,694,278.75
5. Step 5: Solve for x
   x = 2,694,278.75/1,914.84
6. Step 6: Final answer
   x = 1,407.05