Finding the Fourth Proportional to 2,154,680.34, 2,973,467.87 and 1,187,789.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154,680.34 : 2,973,467.87 = 1,187,789.42 : x
2. Step 2: Convert to fraction form
   2,154,680.34/2,973,467.87 = 1,187,789.42/x
3. Step 3: Cross multiply
   2,154,680.34x = 2,973,467.87 × 1,187,789.42
4. Step 4: Simplify right side
   2,154,680.34x = 3,531,853,661,828.60
5. Step 5: Solve for x
   x = 3,531,853,661,828.60/2,154,680.34
6. Step 6: Final answer
   x = 1,639,154.35