Finding the Fourth Proportional to 1,144,357.74, 1,717,666.56 and 859,056.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144,357.74 : 1,717,666.56 = 859,056.30 : x
2. Step 2: Convert to fraction form
   1,144,357.74/1,717,666.56 = 859,056.30/x
3. Step 3: Cross multiply
   1,144,357.74x = 1,717,666.56 × 859,056.30
4. Step 4: Simplify right side
   1,144,357.74x = 1,475,572,279,667.33
5. Step 5: Solve for x
   x = 1,475,572,279,667.33/1,144,357.74
6. Step 6: Final answer
   x = 1,289,432.69