Finding the Fourth Proportional to 1,213,978.76, 1,675,291.03 and 670,114.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,213,978.76 : 1,675,291.03 = 670,114.91 : x
2. Step 2: Convert to fraction form
   1,213,978.76/1,675,291.03 = 670,114.91/x
3. Step 3: Cross multiply
   1,213,978.76x = 1,675,291.03 × 670,114.91
4. Step 4: Simplify right side
   1,213,978.76x = 1,122,637,487,740.51
5. Step 5: Solve for x
   x = 1,122,637,487,740.51/1,213,978.76
6. Step 6: Final answer
   x = 924,758.75