Finding the Fourth Proportional to 1,931.34, 2,894.58 and 1,272.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.34 : 2,894.58 = 1,272.81 : x
2. Step 2: Convert to fraction form
   1,931.34/2,894.58 = 1,272.81/x
3. Step 3: Cross multiply
   1,931.34x = 2,894.58 × 1,272.81
4. Step 4: Simplify right side
   1,931.34x = 3,684,250.37
5. Step 5: Solve for x
   x = 3,684,250.37/1,931.34
6. Step 6: Final answer
   x = 1,907.61