Finding the Fourth Proportional to 1,974.39, 2,725.83 and 1,312.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,974.39 : 2,725.83 = 1,312.62 : x
2. Step 2: Convert to fraction form
   1,974.39/2,725.83 = 1,312.62/x
3. Step 3: Cross multiply
   1,974.39x = 2,725.83 × 1,312.62
4. Step 4: Simplify right side
   1,974.39x = 3,577,980.39
5. Step 5: Solve for x
   x = 3,577,980.39/1,974.39
6. Step 6: Final answer
   x = 1,812.19