Finding the Fourth Proportional to 2,214.01, 3,321.42 and 915.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,214.01 : 3,321.42 = 915.58 : x
2. Step 2: Convert to fraction form
   2,214.01/3,321.42 = 915.58/x
3. Step 3: Cross multiply
   2,214.01x = 3,321.42 × 915.58
4. Step 4: Simplify right side
   2,214.01x = 3,041,017.42
5. Step 5: Solve for x
   x = 3,041,017.42/2,214.01
6. Step 6: Final answer
   x = 1,373.54