Finding the Fourth Proportional to 1,914.42, 2,869.81 and 1,212

Step by Step Solution

1. Step 1: Write the proportion equation
   1,914.42 : 2,869.81 = 1,212 : x
2. Step 2: Convert to fraction form
   1,914.42/2,869.81 = 1,212/x
3. Step 3: Cross multiply
   1,914.42x = 2,869.81 × 1,212
4. Step 4: Simplify right side
   1,914.42x = 3,478,209.72
5. Step 5: Solve for x
   x = 3,478,209.72/1,914.42
6. Step 6: Final answer
   x = 1,816.85