Finding the Fourth Proportional to 1,191.86, 1,654.67 and 1,156.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.86 : 1,654.67 = 1,156.22 : x
2. Step 2: Convert to fraction form
   1,191.86/1,654.67 = 1,156.22/x
3. Step 3: Cross multiply
   1,191.86x = 1,654.67 × 1,156.22
4. Step 4: Simplify right side
   1,191.86x = 1,913,162.55
5. Step 5: Solve for x
   x = 1,913,162.55/1,191.86
6. Step 6: Final answer
   x = 1,605.19