Finding the Fourth Proportional to 2,100.22, 2,897.93 and 1,215.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.22 : 2,897.93 = 1,215.98 : x
2. Step 2: Convert to fraction form
   2,100.22/2,897.93 = 1,215.98/x
3. Step 3: Cross multiply
   2,100.22x = 2,897.93 × 1,215.98
4. Step 4: Simplify right side
   2,100.22x = 3,523,824.92
5. Step 5: Solve for x
   x = 3,523,824.92/2,100.22
6. Step 6: Final answer
   x = 1,677.84