Finding the Fourth Proportional to 1,693.42, 2,336.91 and 947.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,693.42 : 2,336.91 = 947.38 : x
2. Step 2: Convert to fraction form
   1,693.42/2,336.91 = 947.38/x
3. Step 3: Cross multiply
   1,693.42x = 2,336.91 × 947.38
4. Step 4: Simplify right side
   1,693.42x = 2,213,941.80
5. Step 5: Solve for x
   x = 2,213,941.80/1,693.42
6. Step 6: Final answer
   x = 1,307.38