Finding the Fourth Proportional to 2,118,191.78, 3,175,501.89 and 919,210.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118,191.78 : 3,175,501.89 = 919,210.88 : x
2. Step 2: Convert to fraction form
   2,118,191.78/3,175,501.89 = 919,210.88/x
3. Step 3: Cross multiply
   2,118,191.78x = 3,175,501.89 × 919,210.88
4. Step 4: Simplify right side
   2,118,191.78x = 2,918,955,886,748.56
5. Step 5: Solve for x
   x = 2,918,955,886,748.56/2,118,191.78
6. Step 6: Final answer
   x = 1,378,041.36