Finding the Fourth Proportional to 2,054.62, 2,835.71 and 1,215.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.62 : 2,835.71 = 1,215.60 : x
2. Step 2: Convert to fraction form
   2,054.62/2,835.71 = 1,215.60/x
3. Step 3: Cross multiply
   2,054.62x = 2,835.71 × 1,215.60
4. Step 4: Simplify right side
   2,054.62x = 3,447,089.08
5. Step 5: Solve for x
   x = 3,447,089.08/2,054.62
6. Step 6: Final answer
   x = 1,677.73