Finding the Fourth Proportional to 1,051.50, 1,450.98 and 678.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.50 : 1,450.98 = 678.06 : x
2. Step 2: Convert to fraction form
   1,051.50/1,450.98 = 678.06/x
3. Step 3: Cross multiply
   1,051.50x = 1,450.98 × 678.06
4. Step 4: Simplify right side
   1,051.50x = 983,851.50
5. Step 5: Solve for x
   x = 983,851.50/1,051.50
6. Step 6: Final answer
   x = 935.66