Finding the Fourth Proportional to 1,434,188.37, 1,979,191.89 and 780,818.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,188.37 : 1,979,191.89 = 780,818.87 : x
2. Step 2: Convert to fraction form
   1,434,188.37/1,979,191.89 = 780,818.87/x
3. Step 3: Cross multiply
   1,434,188.37x = 1,979,191.89 × 780,818.87
4. Step 4: Simplify right side
   1,434,188.37x = 1,545,390,375,062.96
5. Step 5: Solve for x
   x = 1,545,390,375,062.96/1,434,188.37
6. Step 6: Final answer
   x = 1,077,536.54