Finding the Fourth Proportional to 1,917.32, 2,639.37 and 1,419.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.32 : 2,639.37 = 1,419.02 : x
2. Step 2: Convert to fraction form
   1,917.32/2,639.37 = 1,419.02/x
3. Step 3: Cross multiply
   1,917.32x = 2,639.37 × 1,419.02
4. Step 4: Simplify right side
   1,917.32x = 3,745,298.53
5. Step 5: Solve for x
   x = 3,745,298.53/1,917.32
6. Step 6: Final answer
   x = 1,953.41