Finding the Fourth Proportional to 1,051.90, 1,450.69 and 697.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.90 : 1,450.69 = 697.57 : x
2. Step 2: Convert to fraction form
   1,051.90/1,450.69 = 697.57/x
3. Step 3: Cross multiply
   1,051.90x = 1,450.69 × 697.57
4. Step 4: Simplify right side
   1,051.90x = 1,011,957.82
5. Step 5: Solve for x
   x = 1,011,957.82/1,051.90
6. Step 6: Final answer
   x = 962.03