Finding the Fourth Proportional to 2,123.77, 2,931.34 and 1,416.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.77 : 2,931.34 = 1,416.79 : x
2. Step 2: Convert to fraction form
   2,123.77/2,931.34 = 1,416.79/x
3. Step 3: Cross multiply
   2,123.77x = 2,931.34 × 1,416.79
4. Step 4: Simplify right side
   2,123.77x = 4,153,095.98
5. Step 5: Solve for x
   x = 4,153,095.98/2,123.77
6. Step 6: Final answer
   x = 1,955.53