Finding the Fourth Proportional to 1,385.02, 1,909.17 and 942.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.02 : 1,909.17 = 942.16 : x
2. Step 2: Convert to fraction form
   1,385.02/1,909.17 = 942.16/x
3. Step 3: Cross multiply
   1,385.02x = 1,909.17 × 942.16
4. Step 4: Simplify right side
   1,385.02x = 1,798,743.61
5. Step 5: Solve for x
   x = 1,798,743.61/1,385.02
6. Step 6: Final answer
   x = 1,298.71