Finding the Fourth Proportional to 1,142.22, 1,575.98 and 670.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.22 : 1,575.98 = 670.16 : x
2. Step 2: Convert to fraction form
   1,142.22/1,575.98 = 670.16/x
3. Step 3: Cross multiply
   1,142.22x = 1,575.98 × 670.16
4. Step 4: Simplify right side
   1,142.22x = 1,056,158.76
5. Step 5: Solve for x
   x = 1,056,158.76/1,142.22
6. Step 6: Final answer
   x = 924.65