Finding the Fourth Proportional to 1,098.34, 1,515.31 and 705.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,098.34 : 1,515.31 = 705.58 : x
2. Step 2: Convert to fraction form
   1,098.34/1,515.31 = 705.58/x
3. Step 3: Cross multiply
   1,098.34x = 1,515.31 × 705.58
4. Step 4: Simplify right side
   1,098.34x = 1,069,172.43
5. Step 5: Solve for x
   x = 1,069,172.43/1,098.34
6. Step 6: Final answer
   x = 973.44