Finding the Fourth Proportional to 1,118,407.48, 1,543,419.89 and 609,109.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118,407.48 : 1,543,419.89 = 609,109.45 : x
2. Step 2: Convert to fraction form
   1,118,407.48/1,543,419.89 = 609,109.45/x
3. Step 3: Cross multiply
   1,118,407.48x = 1,543,419.89 × 609,109.45
4. Step 4: Simplify right side
   1,118,407.48x = 940,111,640,316.96
5. Step 5: Solve for x
   x = 940,111,640,316.96/1,118,407.48
6. Step 6: Final answer
   x = 840,580.61