Finding the Fourth Proportional to 2,215.17, 3,055.59 and 1,330.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.17 : 3,055.59 = 1,330.25 : x
2. Step 2: Convert to fraction form
   2,215.17/3,055.59 = 1,330.25/x
3. Step 3: Cross multiply
   2,215.17x = 3,055.59 × 1,330.25
4. Step 4: Simplify right side
   2,215.17x = 4,064,683.32
5. Step 5: Solve for x
   x = 4,064,683.32/2,215.17
6. Step 6: Final answer
   x = 1,834.93