Finding the Fourth Proportional to 1,051.67, 1,451.37 and 876.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.67 : 1,451.37 = 876.71 : x
2. Step 2: Convert to fraction form
   1,051.67/1,451.37 = 876.71/x
3. Step 3: Cross multiply
   1,051.67x = 1,451.37 × 876.71
4. Step 4: Simplify right side
   1,051.67x = 1,272,423.34
5. Step 5: Solve for x
   x = 1,272,423.34/1,051.67
6. Step 6: Final answer
   x = 1,209.91