Finding the Fourth Proportional to 1,038,196.90, 1,556,988.15 and 406,747.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038,196.90 : 1,556,988.15 = 406,747.30 : x
2. Step 2: Convert to fraction form
   1,038,196.90/1,556,988.15 = 406,747.30/x
3. Step 3: Cross multiply
   1,038,196.90x = 1,556,988.15 × 406,747.30
4. Step 4: Simplify right side
   1,038,196.90x = 633,300,726,144.50
5. Step 5: Solve for x
   x = 633,300,726,144.50/1,038,196.90
6. Step 6: Final answer
   x = 610,000.59