Finding the Fourth Proportional to 1,487.94, 2,050.83 and 1,172.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,487.94 : 2,050.83 = 1,172.40 : x
2. Step 2: Convert to fraction form
   1,487.94/2,050.83 = 1,172.40/x
3. Step 3: Cross multiply
   1,487.94x = 2,050.83 × 1,172.40
4. Step 4: Simplify right side
   1,487.94x = 2,404,393.09
5. Step 5: Solve for x
   x = 2,404,393.09/1,487.94
6. Step 6: Final answer
   x = 1,615.92