Finding the Fourth Proportional to 3,677,109.51, 5,515,688.76 and 1,280,999.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,677,109.51 : 5,515,688.76 = 1,280,999.50 : x
2. Step 2: Convert to fraction form
   3,677,109.51/5,515,688.76 = 1,280,999.50/x
3. Step 3: Cross multiply
   3,677,109.51x = 5,515,688.76 × 1,280,999.50
4. Step 4: Simplify right side
   3,677,109.51x = 7,065,594,543,715.62
5. Step 5: Solve for x
   x = 7,065,594,543,715.62/3,677,109.51
6. Step 6: Final answer
   x = 1,921,507.79