Finding the Fourth Proportional to 1,216.04, 1,678.10 and 692.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216.04 : 1,678.10 = 692.06 : x
2. Step 2: Convert to fraction form
   1,216.04/1,678.10 = 692.06/x
3. Step 3: Cross multiply
   1,216.04x = 1,678.10 × 692.06
4. Step 4: Simplify right side
   1,216.04x = 1,161,345.89
5. Step 5: Solve for x
   x = 1,161,345.89/1,216.04
6. Step 6: Final answer
   x = 955.02