Finding the Fourth Proportional to 745,672.89, 1,029,035.54 and 423,389.89

Step by Step Solution

1. Step 1: Write the proportion equation
   745,672.89 : 1,029,035.54 = 423,389.89 : x
2. Step 2: Convert to fraction form
   745,672.89/1,029,035.54 = 423,389.89/x
3. Step 3: Cross multiply
   745,672.89x = 1,029,035.54 × 423,389.89
4. Step 4: Simplify right side
   745,672.89x = 435,683,240,643.14
5. Step 5: Solve for x
   x = 435,683,240,643.14/745,672.89
6. Step 6: Final answer
   x = 584,281.99