Finding the Fourth Proportional to 1,225.05, 1,690.42 and 700.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.05 : 1,690.42 = 700.98 : x
2. Step 2: Convert to fraction form
   1,225.05/1,690.42 = 700.98/x
3. Step 3: Cross multiply
   1,225.05x = 1,690.42 × 700.98
4. Step 4: Simplify right side
   1,225.05x = 1,184,950.61
5. Step 5: Solve for x
   x = 1,184,950.61/1,225.05
6. Step 6: Final answer
   x = 967.27