Finding the Fourth Proportional to 1,215.30, 1,820.68 and 598.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215.30 : 1,820.68 = 598.84 : x
2. Step 2: Convert to fraction form
   1,215.30/1,820.68 = 598.84/x
3. Step 3: Cross multiply
   1,215.30x = 1,820.68 × 598.84
4. Step 4: Simplify right side
   1,215.30x = 1,090,300.20
5. Step 5: Solve for x
   x = 1,090,300.20/1,215.30
6. Step 6: Final answer
   x = 897.14