Finding the Fourth Proportional to 2,186.90, 3,017.93 and 1,302.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.90 : 3,017.93 = 1,302.72 : x
2. Step 2: Convert to fraction form
   2,186.90/3,017.93 = 1,302.72/x
3. Step 3: Cross multiply
   2,186.90x = 3,017.93 × 1,302.72
4. Step 4: Simplify right side
   2,186.90x = 3,931,499.94
5. Step 5: Solve for x
   x = 3,931,499.94/2,186.90
6. Step 6: Final answer
   x = 1,797.75